Merge pull request 'Bump the version to 0.1.5-beta' (#53) from release-0.1.5-beta into master

Reviewed-on: #53

.factorypath

@@ -1,12 +0,0 @@
-<factorypath>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/io.github.llamalad7/mixinextras-fabric/0.4.1/8d1a9e96afb990367fa1f904d17580d164da72e3/mixinextras-fabric-0.4.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm-analysis/9.7.1/f97a3b319f0ed6a8cd944dc79060d3912a28985f/asm-analysis-9.7.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/net.fabricmc/fabric-mixin-compile-extensions/0.6.0/6fda0c85c419f0a259da017a1424f27507eb30f0/fabric-mixin-compile-extensions-0.6.0.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/net.fabricmc/mapping-io/0.2.1/2a1aeedce104191bbb9e39e26abfbfeaf9b0590b/mapping-io-0.2.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm-tree/9.7.1/3a53139787663b139de76b627fca0084ab60d32c/asm-tree-9.7.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/fabric-loom/1.21.4/net.fabricmc.yarn.1_21_4.1.21.4+build.7-v2/mappings.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/net.fabricmc/sponge-mixin/0.15.4+mixin.0.8.7/6a12aacc794f1078458433116e9ed42c1cc98096/sponge-mixin-0.15.4+mixin.0.8.7.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm/9.7.1/f0ed132a49244b042cd0e15702ab9f2ce3cc8436/asm-9.7.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm-util/9.7.1/9e23359b598ec6b74b23e53110dd5c577adf2243/asm-util-9.7.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="EXTJAR" id="/Users/klestiselimaj/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm-commons/9.7.1/406c6a2225cfe1819f102a161e54cc16a5c24f75/asm-commons-9.7.1.jar" enabled="true" runInBatchMode="false"/>
-</factorypath>

.gitea/scripts/publish_modrinth.mjs

@@ -0,0 +1,164 @@
+#!/usr/bin/env node
+// Publish the jars attached to a Gitea release to Modrinth.
+//
+// Creates one Modrinth version per jar (saturn-client-<version>+<mc>.jar), for
+// that Minecraft version, with Fabric API as a required dependency and the
+// Gitea release notes as the changelog. Versions that already exist on
+// Modrinth are skipped, so the script is safe to re-run.
+//
+// Runs on plain Node (>= 18: fetch, FormData, Blob) with no dependencies, since
+// every Gitea Actions runner has Node to run JavaScript actions.
+//
+// Environment:
+//   TAG               release tag, e.g. 0.1.1-beta
+//   SERVER_URL        public Gitea URL, e.g. https://git.selimaj.dev
+//   REPO              owner/name, e.g. saturnclientmc/saturnclient
+//   MODRINTH_TOKEN    Modrinth PAT with the "Create versions" scope
+//   DRY_RUN           "true" to check everything and print what would be
+//                     published without uploading (no token needed)
+
+const MODRINTH_API = "https://api.modrinth.com/v2";
+const MODRINTH_PROJECT_ID = "i6JDSY9x"; // saturnclient
+const FABRIC_API_PROJECT_ID = "P7dR8mSH";
+const USER_AGENT =
+  "saturnclientmc/saturnclient release workflow (https://git.selimaj.dev/saturnclientmc/saturnclient)";
+
+const JAR_NAME = /^saturn-client-(?<version>.+)\+(?<mc>\d+\.\d+(?:\.\d+)?)\.jar$/;
+
+function fail(message) {
+  console.error(message);
+  process.exit(1);
+}
+
+async function http(url, options = {}) {
+  const res = await fetch(url, {
+    ...options,
+    headers: { "User-Agent": USER_AGENT, ...options.headers },
+  });
+  if (!res.ok) {
+    const error = new Error(`${options.method ?? "GET"} ${url} returned ${res.status}: ${await res.text()}`);
+    error.status = res.status;
+    throw error;
+  }
+  return res;
+}
+
+async function getJson(url) {
+  return (await http(url)).json();
+}
+
+function versionType(tag) {
+  const t = tag.toLowerCase();
+  if (t.includes("alpha")) return "alpha";
+  if (t.includes("beta") || t.includes("rc") || t.includes("pre")) return "beta";
+  return "release";
+}
+
+function compareMc(a, b) {
+  const pa = a.split(".").map(Number);
+  const pb = b.split(".").map(Number);
+  for (let i = 0; i < Math.max(pa.length, pb.length); i++) {
+    const diff = (pa[i] ?? 0) - (pb[i] ?? 0);
+    if (diff !== 0) return diff;
+  }
+  return 0;
+}
+
+async function main() {
+  const { TAG: tag, SERVER_URL, REPO: repo } = process.env;
+  const serverUrl = (SERVER_URL ?? "").replace(/\/+$/, "");
+  const dryRun = (process.env.DRY_RUN ?? "").toLowerCase() === "true";
+  const token = process.env.MODRINTH_TOKEN ?? "";
+
+  if (!tag || !serverUrl || !repo) fail("TAG, SERVER_URL and REPO must be set.");
+  if (!token && !dryRun) {
+    fail("MODRINTH_TOKEN is not set. Add it as a repository secret (Settings → Actions → Secrets).");
+  }
+
+  let release;
+  try {
+    release = await getJson(`${serverUrl}/api/v1/repos/${repo}/releases/tags/${encodeURIComponent(tag)}`);
+  } catch (e) {
+    if (e.status === 404) fail(`No Gitea release with tag ${tag}.`);
+    throw e;
+  }
+  const changelog = release.body ?? "";
+
+  const jars = (release.assets ?? [])
+    .map((asset) => ({ name: asset.name, match: JAR_NAME.exec(asset.name) }))
+    .filter(({ match }) => match)
+    .map(({ name, match }) => ({ name, version: match.groups.version, mc: match.groups.mc }))
+    .sort((a, b) => compareMc(a.mc, b.mc));
+
+  if (jars.length === 0) fail(`Release ${tag} has no saturn-client-*.jar assets. Run the Release workflow first.`);
+
+  for (const jar of jars) {
+    if (jar.version !== tag.replace(/^v/, "")) fail(`${jar.name} is version ${jar.version}, but the release tag is ${tag}.`);
+  }
+
+  const knownGameVersions = new Set((await getJson(`${MODRINTH_API}/tag/game_version`)).map((g) => g.version));
+  const unknown = [...new Set(jars.map((j) => j.mc))].filter((mc) => !knownGameVersions.has(mc));
+  if (unknown.length > 0) fail(`Modrinth doesn't know these Minecraft versions: ${unknown.join(", ")}`);
+
+  const existing = new Set(
+    (await getJson(`${MODRINTH_API}/project/${MODRINTH_PROJECT_ID}/version`)).map((v) => v.version_number),
+  );
+  const kind = versionType(tag);
+  const failed = [];
+
+  for (const { name, version, mc } of jars) {
+    const versionNumber = `${version}+${mc}`;
+
+    if (existing.has(versionNumber)) {
+      console.log(`skip    ${versionNumber}: already on Modrinth`);
+      continue;
+    }
+
+    // Gitea's own download URLs use its internal ROOT_URL, so build a public one.
+    const downloadUrl = `${serverUrl}/${repo}/releases/download/${encodeURIComponent(tag)}/${encodeURIComponent(name)}`;
+
+    const data = {
+      project_id: MODRINTH_PROJECT_ID,
+      name: `Saturn Client ${versionNumber}`,
+      version_number: versionNumber,
+      changelog,
+      dependencies: [{ project_id: FABRIC_API_PROJECT_ID, dependency_type: "required" }],
+      game_versions: [mc],
+      version_type: kind,
+      loaders: ["fabric"],
+      featured: false,
+      status: "listed",
+      file_parts: ["file"],
+      primary_file: "file",
+    };
+
+    if (dryRun) {
+      const probe = await http(downloadUrl, { headers: { Range: "bytes=0-0" } });
+      await probe.arrayBuffer();
+      console.log(`would publish ${versionNumber} (${kind}, Minecraft ${mc}) from ${downloadUrl} [reachable]`);
+      continue;
+    }
+
+    try {
+      const jarBytes = await (await http(downloadUrl)).arrayBuffer();
+
+      const form = new FormData();
+      form.append("data", JSON.stringify(data));
+      form.append("file", new Blob([jarBytes], { type: "application/java-archive" }), name);
+
+      await http(`${MODRINTH_API}/version`, {
+        method: "POST",
+        headers: { Authorization: token },
+        body: form,
+      });
+      console.log(`publish ${versionNumber}: done (${(jarBytes.byteLength / 1_000_000).toFixed(1)} MB)`);
+    } catch (e) {
+      console.error(`publish ${versionNumber}: FAILED ${e.message}`);
+      failed.push(versionNumber);
+    }
+  }
+
+  if (failed.length > 0) fail(`Failed to publish: ${failed.join(", ")}`);
+}
+
+main().catch((e) => fail(e.stack ?? String(e)));

.gitea/workflows/check.yml

@@ -0,0 +1,38 @@
+name: Check
+
+# Compiles every Minecraft version on pull requests, so a change that breaks
+# one version (e.g. a missed or bad port) fails before it's merged instead of
+# in the release build. Merges to master aren't re-checked: the PR already
+# checked that code.
+on:
+  pull_request:
+
+jobs:
+  compile:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      # The JDK comes from the runner's tool cache. `cache: gradle` stores Gradle's
+      # dependencies, Loom's Minecraft cache and the build cache in the runner's
+      # actions cache.
+      # 1.21.x builds with Java 21 and 26.x with Java 25. The last version listed is the default
+      # (Gradle runs on it), and the Gradle commands below point toolchain detection at both.
+      - name: Set up Java 25 and 21
+        uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: |
+            25
+            21
+          cache: gradle
+
+      - name: Compile all versions
+        run: |
+          chmod +x gradlew
+          # --continue reports every version that fails, not just the first.
+          ./gradlew compileJava --no-daemon --stacktrace --continue \
+            -Porg.gradle.java.installations.fromEnv=JAVA_HOME_21_X64,JAVA_HOME_25_X64

.gitea/workflows/modrinth.yml

@@ -0,0 +1,36 @@
+name: Publish to Modrinth
+
+# Publishes the jars already attached to a Gitea release (built by the Release
+# workflow) to Modrinth, one version per Minecraft version. Run it manually
+# after smoke-testing the release. It doesn't rebuild anything, and versions
+# already on Modrinth are skipped, so re-running is safe.
+#
+# Needs a MODRINTH_TOKEN repository secret: a Modrinth PAT with the
+# "Create versions" scope.
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Tag of the Gitea release to publish
+        required: true
+      dry_run:
+        description: Only check and print what would be published
+        type: boolean
+        default: false
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Publish to Modrinth
+        env:
+          TAG: ${{ inputs.tag }}
+          DRY_RUN: ${{ inputs.dry_run }}
+          SERVER_URL: ${{ github.server_url }}
+          REPO: ${{ github.repository }}
+          MODRINTH_TOKEN: ${{ secrets.MODRINTH_TOKEN }}
+        # Node is always available on Gitea runners (it runs JavaScript actions).
+        run: node .gitea/scripts/publish_modrinth.mjs

.gitea/workflows/release.yml

@@ -0,0 +1,106 @@
+name: Release
+
+# Publishing a release builds every Minecraft version and attaches the mod jars
+# to it. mod_version in gradle.properties is the source of truth: the release
+# tag must match it (a leading "v" is allowed), so bump mod_version in a PR
+# before tagging the release.
+#
+# To (re)attach jars to an existing release, run this workflow manually with
+# the release's tag.
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Tag of the existing release to build and attach jars to
+        required: true
+
+permissions:
+  contents: write
+
+env:
+  TAG: ${{ github.event.release.tag_name || inputs.tag }}
+  # The public address. Uploads go through the Cloudflare tunnel, which caps
+  # request bodies at 100 MB, so each mod jar must stay under that.
+  GITEA_API: ${{ github.server_url }}/api/v1
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ env.TAG }}
+          submodules: true
+
+      - name: Check tag matches mod_version
+        run: |
+          MOD_VERSION="$(sed -n 's/^mod_version=//p' gradle.properties | tr -d '[:space:]')"
+          if [ "${TAG#v}" != "$MOD_VERSION" ]; then
+            echo "::error::Release tag '$TAG' doesn't match mod_version '$MOD_VERSION' in gradle.properties. Bump mod_version to '${TAG#v}' on the release branch, or tag the release '$MOD_VERSION'." >&2
+            exit 1
+          fi
+          echo "Building Saturn Client $MOD_VERSION"
+
+      # The JDK comes from the runner's tool cache. `cache: gradle` stores Gradle's
+      # dependencies, Loom's Minecraft cache and the build cache in the runner's
+      # actions cache.
+      # 1.21.x builds with Java 21 and 26.x with Java 25. The last version listed is the default
+      # (Gradle runs on it), and the Gradle commands below point toolchain detection at both.
+      - name: Set up Java 25 and 21
+        uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: |
+            25
+            21
+          cache: gradle
+
+      - name: Build all versions
+        run: |
+          chmod +x gradlew
+          # buildAll remaps every Minecraft version (two at a time, to stay within the
+          # Gradle heap) into build/allJars.
+          ./gradlew buildAll --no-daemon --stacktrace \
+            -Porg.gradle.java.installations.fromEnv=JAVA_HOME_21_X64,JAVA_HOME_25_X64
+
+      - name: Upload jars to the release
+        env:
+          TOKEN: ${{ secrets.GITEA_TOKEN }}
+          REPO: ${{ github.repository }}
+        run: |
+          shopt -s nullglob
+          jars=(build/allJars/*.jar)
+          if [ ${#jars[@]} -eq 0 ]; then
+            echo "No jars found in build/allJars" >&2
+            exit 1
+          fi
+
+          # Cloudflare in front of the server rejects uploads of 100 MB or more.
+          for jar in "${jars[@]}"; do
+            size=$(stat -c%s "$jar")
+            if [ "$size" -ge 100000000 ]; then
+              echo "::error::$(basename "$jar") is $((size / 1000000)) MB; uploads must be under 100 MB. Check what's taking space with: unzip -l \"$jar\" | sort -n" >&2
+              exit 1
+            fi
+          done
+
+          # Look the release up by tag so manual runs work too.
+          RELEASE_ID="$(curl --fail-with-body -sS -H "Authorization: token $TOKEN" \
+            "$GITEA_API/repos/$REPO/releases/tags/$TAG" \
+            | grep -o '"id":[0-9]*' | head -n1 | cut -d: -f2)"
+          if [ -z "$RELEASE_ID" ]; then
+            echo "No release found for tag $TAG" >&2
+            exit 1
+          fi
+
+          for jar in "${jars[@]}"; do
+            echo "Uploading $(basename "$jar") to release $TAG ($RELEASE_ID)"
+            curl --fail-with-body -sS -X POST \
+              -H "Authorization: token $TOKEN" \
+              -F "attachment=@$jar" \
+              "$GITEA_API/repos/$REPO/releases/$RELEASE_ID/assets"
+            echo
+          done

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "common"]
+	path = common
+	url = https://git.selimaj.dev/saturnclientmc/common.git

NOTICES.md

@@ -1,6 +1,6 @@
 # Licenses
 
-This project is under [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0), but a lot of code taken from other open source projects that are under other licenses that need to be mentioned due to legal reasons.
+This project is under [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0), but a lot of code taken from other open source projects that are under other licenses that need to be mentioned due to legal or ethical reasons.
 
 | File                                                                                    | License                                                     |
 | --------------------------------------------------------------------------------------- | ----------------------------------------------------------- |

README.MD

@@ -1,17 +1,86 @@
 <p align="center">
-  <img src="src/main/resources/assets/saturnclient/icon.png" alt="OSUI" width="150px"/>
+  <img src="logo.png" alt="Saturn Client Logo" width="150px"/>
 </p>
 
 <h1 align="center">Saturn Client</h1>
 
 <p align="center">
-  <b>Saturn Client is a free and open source Minecraft client</b>
+  <b>A free and open-source Minecraft client.</b><br/>
+  Built with performance, customization, and community in mind.
 </p>
 
-# Credits
+<p align="center">
+  <img src="screenshot.png" alt="Saturn Client Screenshot"/>
+</p>
 
-- Cloak rendering: `IIpho3nix` & `Dhyan Blum`
-- Who Am I: `FokshaWasTaken`
-- Panton font (ui): `Ivan Petrov` & `Fontfabric`
+## About
 
-If any of the code or assets are in your name and you want to remove them, please submit an issue, we are still in alpha to have any artists so we would also appreciate if you could help us make some cosmetics
+Saturn Client is a free, open-source Minecraft client designed to enhance the gameplay experience while staying lightweight and customizable.
+Our goal is to build a clean, optimized client that the community can contribute to and improve together.
+
+Saturn runs on Fabric and supports **Minecraft 1.21.4 to 1.21.11 and 26.1 to 26.3**, with one build per version (the 26.1 build also runs on 26.1.1 and 26.1.2). If something doesn't work on your version, please open an issue.
+
+## Features
+
+- Free cosmetics that don't require real money: cloaks, including animated ones, and hats
+- 18 built-in mods: Armor Display, Auto Sprint, Clock, Coordinates, Crosshair, Day Counter, FPS Display, Freelook, Fullbright, Health Display, Keystrokes, Nametags, No Fog, Ping Display, Speedometer, Status Effects, TPS Display and Zoom
+- Clean and modern UI with animations
+- Ongoing performance improvements
+- Open-source and community-driven
+
+## Installation
+
+1. Install [Fabric Loader](https://fabricmc.net/use/) and [Fabric API](https://modrinth.com/mod/fabric-api) for your Minecraft version.
+2. Download the Saturn Client jar for the same version from [Modrinth](https://modrinth.com/mod/saturnclient) or the [releases page](https://git.selimaj.dev/saturnclientmc/saturnclient/releases).
+3. Put it in your `mods` folder.
+
+### Network use
+
+For cosmetics, Saturn Client connects to the Saturn server (`saturn-server.selimaj.dev`). You're signed in the same way as on an online-mode Minecraft server: your client proves who you are to Mojang's session server, and the Saturn server asks Mojang to confirm it. **Your Minecraft access token is only ever sent to Mojang, never to the Saturn server.**
+
+## Building from source
+
+The version-independent code lives in the `common` submodule, so clone with submodules:
+
+```sh
+git clone --recurse-submodules https://git.selimaj.dev/saturnclientmc/saturnclient.git
+cd saturnclient
+
+./gradlew buildAll                    # every version → build/allJars/
+./gradlew :1.21.11:build              # a single version
+./gradlew :1.21.11:runClient          # launch a development client
+```
+
+Building needs Java 21. The 26.x versions compile with Java 25, which Gradle downloads when it isn't installed.
+
+## Contributing
+
+We welcome contributions of all kinds:
+
+- Code improvements
+- Bug fixes
+- UI enhancements
+- Cosmetic designs
+- Suggestions and feedback
+
+If you're an artist or designer interested in helping with cosmetics or visual assets, we'd love to collaborate.
+
+Most features belong in `common`, which every Minecraft version shares. For code that differs between versions, see the [version guide](VERSION_GUIDE.md): it covers how the versions share one copy of the code with Stonecutter, writing version-specific code, and adding a new Minecraft version. Every pull request is compiled for all versions automatically.
+
+## Credits
+
+- **Cloak Rendering:** `IIpho3nix` & Saturn
+- **Who Am I:** `FokshaWasTaken`
+- **Panorama:**
+  https://www.planetminecraft.com/texture-pack/minecraft-cavesand-cliffs-part-ii-main-menu-panorama/
+
+If any code or assets belong to you and you would like them removed, please open an issue.
+We aim to properly credit all contributors and respect original creators of their respective art.
+
+## License
+
+Saturn Client is free and open-source under the **Apache-2.0** license.
+
+<p align="center">
+  Made with ❤️ by the Saturn Client team
+</p>

VERSION_GUIDE.md

@@ -0,0 +1,82 @@
+# Version guide
+
+How Saturn Client supports several Minecraft versions, and how to change or add one.
+
+## Layout
+
+Every supported Minecraft version (1.21.4 to 1.21.11, and 26.1 to 26.3) builds from one copy of the version-specific code with [Stonecutter](https://stonecutter.kikugie.dev/):
+
+- `common/`: all version-independent code (mods, UI, cosmetics, the server client). It has no Minecraft dependency and reaches the game only through the interfaces in `org.saturnclient.common`.
+- `src/`: the version-specific code (providers, refs, mixins and the three mixin configs), one copy for every version. Where Minecraft's API differs between versions, the code goes behind version comments (see below).
+- `versions/<mc>/`: each version's `gradle.properties` (Minecraft, Fabric Loader and Fabric API versions), plus its `build/` and `run/` folders. Each version is the Gradle project `:<mc>`.
+
+`settings.gradle.kts` lists the versions in `stonecutterVersions`. The root `build.gradle.kts` builds each version, and `stonecutter.gradle.kts` configures the root project (shared repositories, the `common` wiring and `buildAll`). Loom's version is `loomx.loom_version` in the root `gradle.properties`.
+
+Minecraft is obfuscated up to 1.21.11 and ships with Mojang's names from 26.1. The `loom-back-compat` plugin (`loomx`) applies the matching Loom for each version: the remapping one for 1.21.x, whose jar is `remapJar`'s output, and the plain one for 26.x, whose jar is `jar`'s. 26.x also compiles with Java 25 (21 before), set per version in `build.gradle.kts`; Gradle downloads a missing JDK through the foojay resolver, and CI installs both. An optional `minecraft_compat` in a version's `gradle.properties` widens the Minecraft versions its jar loads on, as 26.1's does for its hotfixes.
+
+## Mappings
+
+Every version is built with Mojang's official names (`loom.officialMojangMappings()`), the names Minecraft itself ships from 26.1 on. Yarn isn't used any more: 1.21.11 has the last Yarn release.
+
+Mojang renames things between versions. `src/` uses the active version's (1.21.11's) names, and `stonecutter.gradle.kts` lists replacements that swap in each version's name when Stonecutter processes it: for example `Identifier`, which was `ResourceLocation` before 1.21.11, `AvatarRenderState`, which was `PlayerRenderState` before 1.21.9, and `GuiGraphics`, which is `GuiGraphicsExtractor` from 26.1. Add a replacement there when a rename touches many lines, and only for a name that appears nowhere else in `src/`: replacements work both ways, so the new name is also turned back into the old one for older versions (a `mulPose`/`rotate` replacement would rename `MatrixStackRef.rotate` too). From 26.2 the open screen and overlay live on `Gui` rather than `Minecraft`, so code goes through `impl.ui.Screens` for them.
+
+From 26.3 Minecraft uses SDL instead of GLFW, with SDL's numbers for keys (scancodes), modifiers and mouse buttons. Saturn keeps GLFW's numbers, which `common` uses and the config's keybinds store, and `impl.provider.Keys` converts at the boundary: key events and mouse buttons coming in, and key codes going to the game. Use `InputConstants`' key constants rather than GLFW's in version-specific code.
+
+26.3 also compiles every shader through SPIR-V, so shader inputs and outputs need an explicit `layout(location = …)`. Saturn's `glass.fsh` is shared by every version from 1.21.6 and switches its layout with the defines `GlassRenderer` sets, as it already did for `HAS_LINE_WIDTH`. A class that only moved package needs just a version comment on its import, and a renamed method a version comment where it's called.
+
+Released 1.21.x jars run on intermediary names (`method_1234`), not Mojang's, and Loom renames everything that refers to Minecraft when it builds them. So a mixin can't implement one of `common`'s Ref interfaces by relying on a vanilla method that happens to have the same name: the vanilla method is renamed in the jar, and the interface method is left without an implementation (`AbstractMethodError`). Shadow the vanilla method and implement the Ref method explicitly, as `WindowMixin` does. For the same reason, Ref methods mustn't share a name and parameters with a method of the class they're mixed into, or the mixin replaces the vanilla method in development.
+
+## Version-specific code with Stonecutter
+
+The code in `src/` is always plain Java for the **active** version (1.21.11, set in `stonecutter.gradle.kts`). Code for other versions sits in comments that Stonecutter swaps before building each version:
+
+```java
+//? if >=1.21.9 {
+public void submit(PoseStack matrices, SubmitNodeCollector output, int light, AvatarRenderState state, float limbAngle, float limbDistance) {
+//?} else
+//public void render(PoseStack matrices, MultiBufferSource output, int light, AvatarRenderState state, float limbAngle, float limbDistance) {
+```
+
+A condition without braces covers the next line only. For several lines, use braces and wrap the inactive block in `/* … */`:
+
+```java
+//? if >=1.21.11 {
+import net.minecraft.client.renderer.rendertype.RenderTypes;
+import net.minecraft.client.renderer.rendertype.RenderSetup;
+//?} else {
+/*import net.minecraft.client.renderer.RenderStateShard.MultiTextureStateShard;
+*///?}
+```
+
+Stonecutter rewrites inactive code into its own layout when switching versions (a single inactive line becomes `//code`), so write it that way to begin with, or run a switch and a reset before committing.
+
+When a newer version leaves something out that an older one implements, keep the older version's code behind a condition and mark the newer branch with a `TODO`, rather than dropping it for every version. The panorama in `SaturnScreenFabric.render` is an example. Search for `TODO` to find what newer versions still lack (tracked in #30), and remove the condition once a version gap is fixed.
+
+A whole class that only exists for some versions (such as `MatrixStackMixin`, which only makes sense before 1.21.6's GUI rewrite) can keep an empty class body on the other versions. Before splitting a class like that, look for a hook that works on every version: nametags used to hook label rendering, which 1.21.9 changed, and now replace the name while the render state is built (`LivingEntityRendererMixin`), with no version condition at all. An empty mixin changes nothing, and it keeps the mixin configs the same for every version, since JSON can't hold version comments.
+
+Inactive code sits inside a `/* … */` comment, so it can't contain `/* … */` comments itself: use `//` comments in code that's only active for some versions. Version blocks can nest (Stonecutter writes an inactive block inside another as `/^ … ^/`, as in `GlassRenderer`), but for more than two ranges of the same thing, prefer `//?} else if <condition> {`, as in `PlayerEntityRendererMixin` and `SaturnRenderState`.
+
+- `./gradlew "Set active project to <mc>"` (or the Stonecutter IntelliJ plugin) rewrites `src/` so that version's code is the uncommented one, for editing it in the IDE.
+- `./gradlew "Reset active project"` switches back to 1.21.11. **Run it before committing**, so `src/` is always committed with 1.21.11 active.
+- Each version's processed copy is compiled from `versions/<mc>/build/generated/stonecutter/`, which is also where to look when a non-active version fails to compile.
+
+The `emotes` repository uses the same setup, and its `BentCubeRenderer` and `PlayerModelMixin` are small examples of version comments.
+
+## Checking a change on every version
+
+Since every version shares `src/`, a change applies to all of them at once. Code that uses the Minecraft API may still only compile on some, so build them all:
+
+```sh
+./gradlew compileJava
+```
+
+The **Check** workflow runs the same compile on every pull request, so a version a change doesn't compile on fails before merging. Mixins whose target changed fail at startup rather than at compile time, so launch the versions a change touches with `./gradlew :<mc>:runClient`.
+
+For bigger changes, `./gradlew buildAll` builds every version's jar into `build/allJars/`.
+
+## Adding a Minecraft version
+
+1. Create `versions/<new>/gradle.properties` with `minecraft_version`, `loader_version` and `fabric_api_version` (copy 1.21.11's and change the values; they're listed at <https://fabricmc.net/develop>). Loom's version is shared, in the root `gradle.properties`.
+2. Add `<new>` to `stonecutterVersions` in `settings.gradle.kts`.
+3. Build it with `./gradlew :<new>:compileJava` and put what Minecraft changed behind version comments. Check the mixin configs in `src/main/resources/*.mixins.json` as well: a mixin whose target changed fails at startup (or when its class first loads, such as in a world), not at compile time, so launch it with `./gradlew :<new>:runClient`.
+4. The release workflow builds everything through `buildAll`, and "Publish to Modrinth" takes the game version from each jar's name, so neither needs changing.

build.gradle

@@ -1,80 +0,0 @@
-plugins {
-    id 'fabric-loom' version '1.9-SNAPSHOT'
-    id 'maven-publish'
-}
-
-version = project.mod_version
-group = project.maven_group
-
-repositories {}
-
-dependencies {
-    minecraft "com.mojang:minecraft:${project.minecraft_version}"
-    
-    // Switch back to Yarn
-    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
-    
-    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
-    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
-
-    modApi "dev.felnull:special-model-loader:1.4.0+pre.1"
-    include "dev.felnull:special-model-loader:1.4.0+pre.1"
-}
-
-
-repositories {
-	maven { url "https://maven.parchmentmc.org" }
-	maven {
-		name = "FelNull Maven"
-		url = "https://maven.felnull.dev"
-	}
-}
-
-processResources {
-    inputs.property "version", project.version
-    inputs.property "minecraft_version", project.minecraft_version
-    inputs.property "loader_version", project.loader_version
-    filteringCharset "UTF-8"
-
-    filesMatching("fabric.mod.json") {
-        expand "version": project.version,
-                "minecraft_version": project.minecraft_version,
-                "loader_version": project.loader_version
-    }
-}
-
-def targetJavaVersion = 17
-tasks.withType(JavaCompile).configureEach {
-    it.options.encoding = "UTF-8"
-    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
-        it.options.release.set(targetJavaVersion)
-    }
-}
-
-java {
-    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
-    if (JavaVersion.current() < javaVersion) {
-        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
-    }
-    archivesBaseName = project.archives_base_name
-    withSourcesJar()
-}
-
-jar {
-    from("LICENSE") {
-        rename { "${it}_${project.archivesBaseName}"}
-    }
-    from("NOTICE") {
-        rename { "${it}_${project.archivesBaseName}"}
-    }
-}
-
-publishing {
-    publications {
-        mavenJava(MavenPublication) {
-            from components.java
-        }
-    }
-
-    repositories {}
-}

build.gradle.kts

@@ -0,0 +1,84 @@
+// Builds one Minecraft version from the shared src/. Stonecutter runs this for each version in
+// stonecutterVersions (settings.gradle.kts), with that version's versions/<v>/gradle.properties.
+plugins {
+    id("dev.kikugie.loom-back-compat")
+    `maven-publish`
+}
+
+val minecraftVersion = property("minecraft_version") as String
+// The Minecraft versions the jar loads on (fabric.mod.json); a range where hotfixes share a jar.
+val minecraftCompat = findProperty("minecraft_compat") as String? ?: minecraftVersion
+val javaVersion = if (sc.current.parsed >= "26.1") 25 else 21
+val loaderVersion = property("loader_version") as String
+
+version = "${property("mod_version")}+$minecraftVersion"
+group = property("maven_group") as String
+
+base {
+    archivesName = property("archives_base_name") as String
+}
+
+dependencies {
+    minecraft("com.mojang:minecraft:$minecraftVersion")
+    loomx.applyMojangMappings()
+    modImplementation("net.fabricmc:fabric-loader:$loaderVersion")
+    modImplementation("net.fabricmc.fabric-api:fabric-api:${property("fabric_api_version")}")
+
+    // Saturn's emote library (limb bending, Emotecraft emotes)
+    include(modImplementation("org.saturnclient:emotes-fabric:${property("emotes_version")}+$minecraftVersion")!!)
+
+    implementation(project(":common"))
+
+    for (library in listOf(
+        "dev.selimaj:session-java:0.2.0",
+        "de.javagl:obj:0.4.0",
+        "com.formdev:svgSalamander:1.1.4",
+        "com.fasterxml.jackson.core:jackson-databind:2.17.0",
+        "com.fasterxml.jackson.core:jackson-annotations:2.17.0",
+        "com.fasterxml.jackson.core:jackson-core:2.17.0",
+    )) {
+        include(implementation(library)!!)
+    }
+}
+
+// Injects the version values into fabric.mod.json.
+tasks.processResources {
+    val values = mapOf(
+        "version" to project.version.toString(),
+        "minecraft_version" to minecraftCompat,
+        "loader_version" to loaderVersion,
+        "java" to "JAVA_$javaVersion",
+    )
+    inputs.properties(values)
+    filteringCharset = "UTF-8"
+    filesMatching(listOf("fabric.mod.json", "*.mixins.json")) { expand(values) }
+}
+
+tasks.withType<JavaCompile>().configureEach {
+    options.release = javaVersion
+}
+
+java {
+    // Loom attaches the sources jar to remapSourcesJar and build.
+    withSourcesJar()
+    toolchain.languageVersion = JavaLanguageVersion.of(javaVersion)
+}
+
+tasks.jar {
+    val archivesName = base.archivesName
+    inputs.property("archivesName", archivesName)
+    from("LICENSE") {
+        rename { "${it}_${archivesName.get()}" }
+    }
+    from(project(":common").extensions.getByType<SourceSetContainer>()["main"].output)
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+}
+
+publishing {
+    publications {
+        create<MavenPublication>("mavenJava") {
+            artifactId = property("archives_base_name") as String
+            from(components["java"])
+        }
+    }
+}

gradle.properties

@@ -1,17 +1,15 @@
-# Done to increase the memory available to gradle.
-org.gradle.jvmargs=-Xmx1G
+org.gradle.jvmargs=-Xmx3G
+org.gradle.parallel=true
+# Reuse task outputs (e.g. compiled classes) when inputs haven't changed.
+org.gradle.caching=true
 
-# Fabric Properties
-	# check these on https://modmuss50.me/fabric.html
-	minecraft_version=1.21.4
-	yarn_mappings=1.21.4+build.7
-	loader_version=0.16.10
+# IntelliJ IDEA is not yet fully compatible with configuration cache, see: https://github.com/FabricMC/fabric-loom/issues/1349
+org.gradle.configuration-cache=false
 
-# Mod Properties
-	mod_version = 0.0.1-alpha0
-	maven_group = me.iipho3nix
-	archives_base_name = saturnclient
+mod_version=0.1.5-beta
 
-# Dependencies
-	# check this on https://modmuss50.me/fabric.html
-	fabric_version=0.114.0+1.21.4
+# Saturn's emote library (git.selimaj.dev/saturnclientmc/emotes)
+emotes_version=0.1.2
+
+# Loom, for every Minecraft version (read by loom-back-compat).
+loomx.loom_version=1.17.21

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.8.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@
 
 ##############################################################################
 #
-#   Gradle start up script for POSIX generated by Gradle.
+#   gradlew start up script for POSIX generated by Gradle.
 #
 #   Important for running:
 #
@@ -29,7 +29,7 @@
 #       bash, then to run this script, type that shell name before the whole
 #       command line, like:
 #
-#           ksh Gradle
+#           ksh gradlew
 #
 #       Busybox and similar reduced shells will NOT work, because this script
 #       requires all of these POSIX shell features:
@@ -57,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/3d91ce3b8caaf77ad09f381f43615b715b53f72c/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -114,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 
 # Determine the Java command to use to start the JVM.
@@ -172,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -212,8 +210,7 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
 # Stop when "xargs" is not available.

gradlew.bat

@@ -19,12 +19,39 @@
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
-@rem  Gradle startup script for Windows
+@rem  gradlew startup script for Windows
 @rem
 @rem ##########################################################################
 
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
+@rem Set local scope for the variables, and ensure extensions are enabled
+setlocal EnableExtensions
+
+@rem Catch executions from older scripts and ensure they exit cleanly.
+@rem This can be removed once we can be reasonably confident that few people
+@rem will be migrating directly to this new wrapper.
+goto afterSafetyNet
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+goto exitWithErrorLevel
+:afterSafetyNet
 
 set DIRNAME=%~dp0
 if "%DIRNAME%"=="" set DIRNAME=.
@@ -45,13 +72,14 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo. 1>&2
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
+1>&2 echo.
+1>&2 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+1>&2 echo.
+1>&2 echo Please set the JAVA_HOME variable in your environment to match the
+1>&2 echo location of your Java installation.
 
-goto fail
+"%COMSPEC%" /c exit 1
+goto exitWithErrorLevel
 
 :findJavaFromJavaHome
 set JAVA_HOME=%JAVA_HOME:"=%
@@ -59,36 +87,26 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo. 1>&2
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
+1>&2 echo.
+1>&2 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+1>&2 echo.
+1>&2 echo Please set the JAVA_HOME variable in your environment to match the
+1>&2 echo location of your Java installation.
 
-goto fail
+"%COMSPEC%" /c exit 1
+goto exitWithErrorLevel
 
 :execute
 @rem Setup the command line
 
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+@rem Execute gradlew
+@rem endlocal doesn't take effect until after the line is parsed and variables are expanded
+@rem which allows us to clear the local environment before executing the java command
+endlocal & "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* & call :exitWithErrorLevel & goto exitWithErrorLevel
 
-:end
-@rem End local scope for the variables with windows NT shell
-if %ERRORLEVEL% equ 0 goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-set EXIT_CODE=%ERRORLEVEL%
-if %EXIT_CODE% equ 0 set EXIT_CODE=1
-if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
-exit /b %EXIT_CODE%
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@rem This label must not be changed. We rely on old scripts being able to jump to this point.
+:exitWithErrorLevel
+@rem Use "%COMSPEC%" /c exit to allow operators to work properly in scripts
+"%COMSPEC%" /c exit %ERRORLEVEL%

settings.gradle

@@ -1,9 +0,0 @@
-pluginManagement {
-    repositories {
-        maven {
-            name = 'Fabric'
-            url = 'https://maven.fabricmc.net/'
-        }
-        gradlePluginPortal()
-    }
-}

settings.gradle.kts

@@ -0,0 +1,35 @@
+pluginManagement {
+    repositories {
+        maven("https://maven.fabricmc.net/")
+        maven("https://maven.kikugie.dev/releases")
+        gradlePluginPortal()
+        mavenCentral()
+    }
+}
+
+plugins {
+    // Downloads the Java toolchain a version needs (Java 25 for 26.1+) when it isn't installed.
+    id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
+    id("dev.kikugie.stonecutter") version "0.9.8"
+    // Picks the Loom variant per version: remapping for 1.21.x, plain for the unobfuscated 26.1+.
+    // Its version is loomx.loom_version in gradle.properties.
+    id("dev.kikugie.loom-back-compat") version "0.4.2"
+}
+
+rootProject.name = "saturn-client"
+
+include("common")
+
+// Versions built by Stonecutter from the shared src/ (see stonecutter.gradle.kts). Each one's
+// versions/<v>/gradle.properties holds its Minecraft, Fabric Loader and Fabric API versions.
+val stonecutterVersions = listOf(
+    "1.21.4", "1.21.5", "1.21.6", "1.21.7", "1.21.8", "1.21.9", "1.21.10", "1.21.11",
+    "26.1", "26.2", "26.3",
+)
+
+stonecutter {
+    create(rootProject) {
+        versions(stonecutterVersions)
+        vcsVersion = "1.21.11"
+    }
+}

src/main/java/org/saturnclient/impl/cosmetics/CloakFeatureRenderer.java

@@ -0,0 +1,548 @@
+package org.saturnclient.impl.cosmetics;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+import org.joml.Matrix3f;
+import org.joml.Matrix4f;
+import org.joml.Quaternionf;
+import org.joml.Vector3f;
+import org.joml.Vector4f;
+import org.saturnclient.client.player.SaturnPlayer;
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.config.Config;
+import org.saturnclient.cosmetics.Cloaks;
+import org.saturnclient.emotes.core.Animation;
+import org.saturnclient.emotes.core.Bone;
+import org.saturnclient.emotes.core.bend.LimbBend;
+import org.saturnclient.emotes.core.bend.Vec3;
+import org.saturnclient.emotes.fabric.access.BendablePart;
+import org.saturnclient.impl.cosmetics.utils.ShaderUtils;
+import org.saturnclient.saturnclient.SaturnRenderState;
+
+import net.minecraft.client.model.geom.ModelPart;
+import net.minecraft.client.renderer.texture.OverlayTexture;
+import com.mojang.blaze3d.vertex.VertexConsumer;
+//? if >=1.21.9 {
+import net.minecraft.client.renderer.SubmitNodeCollector;
+//?} else
+//import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.resources.model.EquipmentClientInfo;
+import net.minecraft.client.resources.model.EquipmentAssetManager;
+import net.minecraft.client.resources.model.EquipmentClientInfo.LayerType;
+import net.minecraft.client.renderer.entity.layers.RenderLayer;
+import net.minecraft.client.renderer.entity.RenderLayerParent;
+//? if >=1.21.11 {
+import net.minecraft.client.model.player.PlayerModel;
+//?} else
+//import net.minecraft.client.model.PlayerModel;
+import net.minecraft.client.renderer.entity.state.AvatarRenderState;
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.core.component.DataComponents;
+import net.minecraft.world.item.equipment.Equippable;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.equipment.EquipmentAsset;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.util.Mth;
+
+/**
+ * The cloak renderer
+ * - **Efficient**: uses a image only consisting of the cloak texture, 16x8
+ * whitespace.
+ * - **Curving**: Curves when player velocity increases.
+ * - **Wavey**: Makes the cloak feel like wind, when jump sprinting.
+ */
+public class CloakFeatureRenderer extends RenderLayer<AvatarRenderState, PlayerModel> {
+    private final EquipmentAssetManager equipmentModelLoader;
+    private static final int PARTS = 24;
+    private final float[] segmentValues = new float[PARTS];
+    private static final int H_PARTS = 6;
+    private float horizontalCurve = 0.0f;
+
+    private static final float TEX_W = 176f;
+    private static final float TEX_H = 138f;
+
+    private static final class PxRect {
+        final int x, y, w, h;
+
+        PxRect(int x, int y, int w, int h) {
+            this.x = x;
+            this.y = y;
+            this.w = w;
+            this.h = h;
+        }
+
+        float u1() {
+            return x / TEX_W;
+        }
+
+        float v1() {
+            return y / TEX_H;
+        }
+
+        float u2() {
+            return (x + w) / TEX_W;
+        }
+
+        float v2() {
+            return (y + h) / TEX_H;
+        }
+    }
+
+    private static final PxRect FRONT_RECT = new PxRect(8, 8, 80, 128);
+    private static final PxRect BACK_RECT = new PxRect(96, 8, 80, 128);
+    private static final PxRect LEFT_EDGE_RECT = new PxRect(0, 8, 8, 128);
+    private static final PxRect RIGHT_EDGE_RECT = new PxRect(88, 8, 8, 128);
+    private static final PxRect TOP_RECT = new PxRect(8, 0, 80, 8);
+    private static final PxRect BOTTOM_RECT = new PxRect(88, 0, 80, 8);
+
+    public CloakFeatureRenderer(RenderLayerParent<AvatarRenderState, PlayerModel> context,
+            EquipmentAssetManager equipmentModelLoader) {
+        super(context);
+        this.equipmentModelLoader = equipmentModelLoader;
+        Arrays.fill(segmentValues, 0.0f);
+    }
+
+    private boolean hasCustomModelForLayer(ItemStack stack, EquipmentClientInfo.LayerType layerType) {
+        Equippable equippableComponent = (Equippable) stack
+                .get(DataComponents.EQUIPPABLE);
+        if (equippableComponent != null && !equippableComponent.assetId().isEmpty()) {
+            EquipmentClientInfo equipmentModel = this.equipmentModelLoader
+                    .get((ResourceKey<EquipmentAsset>) equippableComponent.assetId().get());
+            return !equipmentModel.getLayers(layerType).isEmpty();
+        } else {
+            return false;
+        }
+    }
+
+    private void vertex(VertexConsumer vc, Matrix4f posMat, Matrix3f normalMat,
+            net.minecraft.world.phys.Vec3 pos, int color,
+            float u, float v, int overlay, int light,
+            float nx, float ny, float nz) {
+
+        Vector4f p = new Vector4f((float) pos.x, (float) pos.y, (float) pos.z, 1.0f);
+        p.mul(posMat);
+
+        Vector3f n = new Vector3f(nx, ny, nz);
+        n.mul(normalMat);
+
+        vc.addVertex(
+                p.x(), p.y(), p.z(),
+                color,
+                u, v,
+                overlay, light,
+                n.x(), n.y(), n.z());
+    }
+
+    private void renderCapeQuad(VertexConsumer vertexConsumer, PoseStack.Pose entry,
+            net.minecraft.world.phys.Vec3 bottomLeft, net.minecraft.world.phys.Vec3 bottomRight, net.minecraft.world.phys.Vec3 topRight, net.minecraft.world.phys.Vec3 topLeft,
+            float u1, float v1, float u2, float v2, int light, int overlay,
+            float normalX, float normalY, float normalZ, boolean flipWinding) {
+        // Extract matrix (you must transform positions manually now)
+        Matrix4f pos = entry.pose();
+        Matrix3f normalMat = entry.normal();
+
+        int color = 0xFFFFFFFF; // white RGBA
+
+        if (!flipWinding) {
+            // CCW
+            vertex(vertexConsumer, pos, normalMat, bottomLeft, color, u1, v2, overlay, light, normalX, normalY,
+                    normalZ);
+            vertex(vertexConsumer, pos, normalMat, bottomRight, color, u2, v2, overlay, light, normalX, normalY,
+                    normalZ);
+            vertex(vertexConsumer, pos, normalMat, topRight, color, u2, v1, overlay, light, normalX, normalY, normalZ);
+            vertex(vertexConsumer, pos, normalMat, topLeft, color, u1, v1, overlay, light, normalX, normalY, normalZ);
+        } else {
+            // CW
+            vertex(vertexConsumer, pos, normalMat, topLeft, color, u1, v1, overlay, light, normalX, normalY, normalZ);
+            vertex(vertexConsumer, pos, normalMat, topRight, color, u2, v1, overlay, light, normalX, normalY, normalZ);
+            vertex(vertexConsumer, pos, normalMat, bottomRight, color, u2, v2, overlay, light, normalX, normalY,
+                    normalZ);
+            vertex(vertexConsumer, pos, normalMat, bottomLeft, color, u1, v2, overlay, light, normalX, normalY,
+                    normalZ);
+        }
+    }
+
+    private void renderCape(PoseStack.Pose entry, VertexConsumer vertexConsumer,
+            AvatarRenderState playerState, int light, int overlay) {
+
+        float capeWidth = 10.0f / 16.0f;
+        float capeHeight = 16.0f / 16.0f;
+        float capeDepth = 1.0f / 16.0f;
+
+        final float frontU1 = FRONT_RECT.u1();
+        final float frontU2 = FRONT_RECT.u2();
+        final float frontV1 = FRONT_RECT.v1();
+        final float frontV2 = FRONT_RECT.v2();
+        final float frontPartV = (frontV2 - frontV1) / PARTS;
+
+        final float backU1 = BACK_RECT.u1();
+        final float backU2 = BACK_RECT.u2();
+        final float backV1 = BACK_RECT.v1();
+        final float backV2 = BACK_RECT.v2();
+        final float backPartV = (backV2 - backV1) / PARTS;
+
+        final float leftU1 = LEFT_EDGE_RECT.u1();
+        final float leftU2 = LEFT_EDGE_RECT.u2();
+        final float leftV1 = LEFT_EDGE_RECT.v1();
+        final float leftV2 = LEFT_EDGE_RECT.v2();
+        final float leftPartV = (leftV2 - leftV1) / PARTS;
+
+        final float rightU1 = RIGHT_EDGE_RECT.u1();
+        final float rightU2 = RIGHT_EDGE_RECT.u2();
+        final float rightV1 = RIGHT_EDGE_RECT.v1();
+        final float rightV2 = RIGHT_EDGE_RECT.v2();
+        final float rightPartV = (rightV2 - rightV1) / PARTS;
+
+        final float topU1 = TOP_RECT.u1();
+        final float topU2 = TOP_RECT.u2();
+        final float topV1 = TOP_RECT.v1();
+        final float topV2 = TOP_RECT.v2();
+
+        final float bottomU1 = BOTTOM_RECT.u1();
+        final float bottomU2 = BOTTOM_RECT.u2();
+        final float bottomV1 = BOTTOM_RECT.v1();
+        final float bottomV2 = BOTTOM_RECT.v2();
+
+        // =============================
+        // 1. Spine
+        // =============================
+
+        float[] spineY = new float[PARTS + 1];
+        float[] spineZ = new float[PARTS + 1];
+
+        float partHeight = capeHeight / PARTS;
+
+        for (int i = 0; i < PARTS; i++) {
+            float angle = (2.0f - segmentValues[i]) * ((float) Math.PI / 2f);
+            float dirY = -(float) Math.cos(angle);
+            float dirZ = (float) Math.sin(angle);
+
+            spineY[i + 1] = spineY[i] + dirY * partHeight;
+            spineZ[i + 1] = spineZ[i] + dirZ * partHeight;
+        }
+
+        // =============================
+        // 2. Grid
+        // =============================
+
+        net.minecraft.world.phys.Vec3[][] inner = new net.minecraft.world.phys.Vec3[H_PARTS + 1][PARTS + 1];
+        net.minecraft.world.phys.Vec3[][] outer = new net.minecraft.world.phys.Vec3[H_PARTS + 1][PARTS + 1];
+
+        for (int x = 0; x <= H_PARTS; x++) {
+
+            float t = (float) x / H_PARTS;
+            float xPos = -capeWidth / 2.0f + capeWidth * t;
+
+            float centered = t - 0.5f;
+            float curve = (centered * centered) * 0.3f;
+            float zCurve = (curve * horizontalCurve) / PARTS;
+
+            for (int i = 0; i <= PARTS; i++) {
+                float y = spineY[i];
+                float z = spineZ[i];
+
+                int idx = Math.min(i, PARTS - 1);
+                // angle: 0 is horizontal (y-flat), PI/2 is vertical (z-flat)
+                float angle = (2.0f - segmentValues[idx]) * ((float) Math.PI / 2f);
+
+                float cosA = (float) Math.cos(angle);
+                float sinA = (float) Math.sin(angle);
+
+                // Calculate how much the horizontal curve shifts the vertex
+                float currentCurve = zCurve * i;
+
+                // Rotate the curve offset so it aligns with the cape's tilt
+                float curveY = sinA * currentCurve;
+                float curveZ = cosA * currentCurve;
+
+                float thickY = sinA * capeDepth;
+                float thickZ = cosA * capeDepth;
+
+                inner[x][i] = new net.minecraft.world.phys.Vec3(xPos, y - curveY, z - curveZ);
+                outer[x][i] = new net.minecraft.world.phys.Vec3(xPos, (y - curveY) - thickY, (z - curveZ) - thickZ);
+            }
+
+        }
+
+        // =============================
+        // 3. Front + Back
+        // =============================
+
+        for (int x = 0; x < H_PARTS; x++) {
+
+            float uStart = frontU1 + (frontU2 - frontU1) * (1.0f - ((float) x / H_PARTS));
+            float uEnd = frontU1 + (frontU2 - frontU1) * (1.0f - ((float) (x + 1) / H_PARTS));
+
+            float buStart = backU1 + (backU2 - backU1) * ((float) x / H_PARTS);
+            float buEnd = backU1 + (backU2 - backU1) * ((float) (x + 1) / H_PARTS);
+
+            for (int i = 0; i < PARTS; i++) {
+
+                float vStart = frontV1 + frontPartV * i;
+                float vEnd = frontV1 + frontPartV * (i + 1);
+
+                float bvStart = backV1 + backPartV * i;
+                float bvEnd = backV1 + backPartV * (i + 1);
+
+                net.minecraft.world.phys.Vec3 innerTL = inner[x + 1][i];
+                net.minecraft.world.phys.Vec3 innerTR = inner[x][i];
+                net.minecraft.world.phys.Vec3 innerBL = inner[x + 1][i + 1];
+                net.minecraft.world.phys.Vec3 innerBR = inner[x][i + 1];
+
+                net.minecraft.world.phys.Vec3 outerTL = outer[x + 1][i];
+                net.minecraft.world.phys.Vec3 outerTR = outer[x][i];
+                net.minecraft.world.phys.Vec3 outerBL = outer[x + 1][i + 1];
+                net.minecraft.world.phys.Vec3 outerBR = outer[x][i + 1];
+
+                // FRONT
+                renderCapeQuad(vertexConsumer, entry,
+                        outerBR, outerBL, outerTL, outerTR,
+                        uStart, vStart, uEnd, vEnd,
+                        light, overlay, 0, 0, 1, false);
+
+                // BACK
+                renderCapeQuad(vertexConsumer, entry,
+                        innerBL, innerBR, innerTR, innerTL,
+                        buEnd, bvStart, buStart, bvEnd,
+                        light, overlay, 0, 0, -1, false);
+            }
+        }
+
+        // =============================
+        // 4. LEFT SIDE (x = H_PARTS)
+        // =============================
+
+        for (int i = 0; i < PARTS; i++) {
+
+            net.minecraft.world.phys.Vec3 innerTop = inner[H_PARTS][i];
+            net.minecraft.world.phys.Vec3 innerBot = inner[H_PARTS][i + 1];
+            net.minecraft.world.phys.Vec3 outerTop = outer[H_PARTS][i];
+            net.minecraft.world.phys.Vec3 outerBot = outer[H_PARTS][i + 1];
+
+            float vStart = leftV1 + leftPartV * i;
+            float vEnd = leftV1 + leftPartV * (i + 1);
+
+            renderCapeQuad(vertexConsumer, entry,
+                    innerTop, outerTop, outerBot, innerBot,
+                    leftU1, vEnd,
+                    leftU2, vStart,
+                    light, overlay, -1, 0, 0, false);
+        }
+
+        // =============================
+        // 5. RIGHT SIDE (x = 0)
+        // =============================
+
+        for (int i = 0; i < PARTS; i++) {
+
+            net.minecraft.world.phys.Vec3 innerTop = inner[0][i];
+            net.minecraft.world.phys.Vec3 innerBot = inner[0][i + 1];
+            net.minecraft.world.phys.Vec3 outerTop = outer[0][i];
+            net.minecraft.world.phys.Vec3 outerBot = outer[0][i + 1];
+
+            float vStart = rightV1 + rightPartV * i;
+            float vEnd = rightV1 + rightPartV * (i + 1);
+
+            renderCapeQuad(vertexConsumer, entry,
+                    outerTop, innerTop, innerBot, outerBot,
+                    rightU1, vEnd,
+                    rightU2, vStart,
+                    light, overlay, 1, 0, 0, false);
+        }
+
+        // =============================
+        // 6. TOP (i = 0)
+        // =============================
+
+        for (int x = 0; x < H_PARTS; x++) {
+
+            net.minecraft.world.phys.Vec3 outerL = outer[x][0];
+            net.minecraft.world.phys.Vec3 outerR = outer[x + 1][0];
+            net.minecraft.world.phys.Vec3 innerR = inner[x + 1][0];
+            net.minecraft.world.phys.Vec3 innerL = inner[x][0];
+
+            float uStart = topU1 + (topU2 - topU1) * ((float) x / H_PARTS);
+            float uEnd = topU1 + (topU2 - topU1) * ((float) (x + 1) / H_PARTS);
+
+            renderCapeQuad(vertexConsumer, entry,
+                    outerL, outerR, innerR, innerL,
+                    uStart, topV1, uEnd, topV2,
+                    light, overlay, 0, 1, 0, false);
+        }
+
+        // =============================
+        // 7. BOTTOM (i = PARTS)
+        // =============================
+
+        for (int x = 0; x < H_PARTS; x++) {
+
+            net.minecraft.world.phys.Vec3 innerL = inner[x][PARTS];
+            net.minecraft.world.phys.Vec3 innerR = inner[x + 1][PARTS];
+            net.minecraft.world.phys.Vec3 outerR = outer[x + 1][PARTS];
+            net.minecraft.world.phys.Vec3 outerL = outer[x][PARTS];
+
+            float uStart = bottomU1 + (bottomU2 - bottomU1) * ((float) x / H_PARTS);
+            float uEnd = bottomU1 + (bottomU2 - bottomU1) * ((float) (x + 1) / H_PARTS);
+
+            renderCapeQuad(vertexConsumer, entry,
+                    innerL, innerR, outerR, outerL,
+                    uStart, bottomV1, uEnd, bottomV2,
+                    light, overlay, 0, -1, 0, false);
+        }
+    }
+
+    /** A torso bend past this curves the back more than a flat cloak can follow. */
+    private static final float MAX_CLOAK_BEND = (float) Math.toRadians(10);
+    /** Whether each animation bends the torso past that at any point. */
+    private static final Map<Animation, Boolean> BENDS_TORSO = Collections.synchronizedMap(new WeakHashMap<>());
+
+    /**
+     * Whether the player is playing an emote that curves the torso (a twerk, the griddy). The cloak
+     * would cut through the arched back, so it's hidden for the whole emote rather than only while
+     * the back is curved, which would flicker.
+     */
+    private static boolean playingTorsoBend(SaturnPlayer player) {
+        return org.saturnclient.emotes.fabric.Emotes.playing(player.uuid)
+                .map(playing -> BENDS_TORSO.computeIfAbsent(playing.animation(), CloakFeatureRenderer::bendsTorso))
+                .orElse(false);
+    }
+
+    private static boolean bendsTorso(Animation animation) {
+        for (float tick = 0; tick <= animation.length(); tick += 0.5f) {
+            if (animation.sample(tick).get(Bone.BODY).filter(body -> Math.abs(body.bend()) > MAX_CLOAK_BEND).isPresent()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * An emote that bends the torso a little leans the chest from the hips, so the cloak hangs from
+     * where the top of the back ends up, turned as much as the torso is there.
+     */
+    private static void followBend(PoseStack matrices, ModelPart body) {
+        LimbBend bend = ((BendablePart) (Object) body).saturnEmotes$getBend();
+        if (bend == null || bend.isStraight()) {
+            return;
+        }
+
+        // The top of the torso, in the body's own pixels
+        float[] top = new float[3];
+        bend.bendPoint(0, 0, 0, top);
+        matrices.translate(top[0] / 16.0f, top[1] / 16.0f, top[2] / 16.0f);
+
+        Vec3 axis = bend.axis();
+        Quaternionf rotation = new Quaternionf().rotationAxis(bend.angleAt(0), axis.x(), axis.y(), axis.z());
+        //? if >=26.3 {
+        /*matrices.rotate(rotation);
+        *///?} else
+        matrices.mulPose(rotation);
+    }
+
+    // Shift array left and insert new value at the start
+    private void updateSegmentValues(float value) {
+        // Shift all elements one position to the right (from end to start)
+        for (int i = segmentValues.length - 1; i > 0; i--) {
+            segmentValues[i] = segmentValues[i - 1];
+        }
+
+        // Insert the new value at index 0
+        segmentValues[0] = value;
+    }
+
+    private long lastUpdate = 0;
+
+    @Override
+    //? if >=1.21.9 {
+    public void submit(PoseStack matrices,
+    //?} else
+    //public void render(PoseStack matrices,
+            //? if >=1.21.9 {
+            SubmitNodeCollector output,
+            //?} else
+            //MultiBufferSource output,
+            int light, AvatarRenderState state, float limbAngle, float limbDistance) {
+        if (state.isInvisible || !state.showCape
+                //? if >=1.21.9 {
+                || state.skin.cape() != null) {
+                //?} else
+                //|| state.skin.capeTexture() != null) {
+            return;
+        }
+
+        //? if >=1.21.8 {
+        SaturnPlayer player = state.getData(SaturnRenderState.saturnDataKey);
+        //?} else
+        //SaturnPlayer player = SaturnPlayer.get(state.name);
+
+        if (player == null || playingTorsoBend(player)) {
+            return;
+        }
+
+        IdentifierRef customCape = Cloaks.getCurrentCloakTexture(player.cloak);
+        if (customCape == null
+                || this.hasCustomModelForLayer(state.chestEquipment, LayerType.WINGS)) {
+            return;
+        }
+
+        int minBrightness = 7;
+        int blockLight = (light >> 4) & 0xF;
+        int skyLight = (light >> 20) & 0xF;
+        blockLight = Math.max(blockLight, minBrightness);
+        
+        skyLight = Math.max(skyLight, minBrightness);
+        light = (skyLight << 20) | (blockLight << 4);
+
+        matrices.pushPose();
+
+        // On the back: the whole player (which emotes like the backflip turn), then the body's position
+        // and turn (which crouching and emotes move), then the chest's lean when an emote bends the torso
+        PlayerModel model = this.getParentModel();
+        //? if >=1.21.5 {
+        model.root().translateAndRotate(matrices);
+        model.body.translateAndRotate(matrices);
+        //?} else {
+        /*model.root().translateAndRotate(matrices);
+        model.body.translateAndRotate(matrices);
+        *///?}
+        followBend(matrices, model.body);
+
+        matrices.translate(0.0f, 0.0f, 0.12f);
+
+        if (this.hasCustomModelForLayer(state.chestEquipment, LayerType.HUMANOID)) {
+            matrices.translate(0.0F, -0.053125F, 0.06875F);
+        }
+
+        long now = System.currentTimeMillis();
+        if (now - lastUpdate >= 20) {
+            float velX = Math.min(0.8f, state.capeLean / 108.0f);
+            float rawVelY = state.capeFlap;
+            float velY = (rawVelY > 3.4f ? rawVelY : rawVelY < -3.4f ? rawVelY : 0.0f) / 16;
+
+            float value = Math.max(0.0f, Math.min(2.0f, state.isVisuallySwimming ? 0.0f : velX + velY));
+
+            if (Config.cloakPhysics.value) {
+                updateSegmentValues(segmentValues[0] + (value - segmentValues[0]) * 0.3f);
+            } else {
+                Arrays.fill(segmentValues, segmentValues[0] + (value - segmentValues[0]) * 0.05f);
+            }
+            lastUpdate = now;
+        }
+
+        final int l = light;
+
+        horizontalCurve = Mth.clamp(state.capeLean / 150.0f, -1.0f, 1.0f);
+
+        //? if >=1.21.9 {
+        output.submitCustomGeometry(matrices, ShaderUtils.getRenderLayer(customCape), (entry, vertexConsumer) -> {
+            renderCape(entry, vertexConsumer, state, l, OverlayTexture.NO_OVERLAY);
+        });
+        //?} else
+        //renderCape(matrices.last(), output.getBuffer(ShaderUtils.getRenderLayer(customCape)), state, l, OverlayTexture.NO_OVERLAY);
+
+        matrices.popPose();
+    }
+}

src/main/java/org/saturnclient/impl/cosmetics/HatFeatureRenderer.java

@@ -0,0 +1,65 @@
+package org.saturnclient.impl.cosmetics;
+
+import org.saturnclient.client.player.SaturnPlayer;
+import org.saturnclient.impl.cosmetics.obj.MtlLoader;
+import org.saturnclient.impl.cosmetics.obj.ObjModel;
+import org.saturnclient.saturnclient.SaturnRenderState;
+
+import net.minecraft.client.renderer.texture.OverlayTexture;
+//? if >=1.21.9 {
+import net.minecraft.client.renderer.SubmitNodeCollector;
+//?} else
+//import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.entity.layers.RenderLayer;
+import net.minecraft.client.renderer.entity.RenderLayerParent;
+//? if >=1.21.11 {
+import net.minecraft.client.model.player.PlayerModel;
+//?} else
+//import net.minecraft.client.model.PlayerModel;
+import net.minecraft.client.renderer.entity.state.AvatarRenderState;
+import com.mojang.blaze3d.vertex.PoseStack;
+
+public class HatFeatureRenderer extends RenderLayer<AvatarRenderState, PlayerModel> {
+    public HatFeatureRenderer(RenderLayerParent<AvatarRenderState, PlayerModel> context) {
+        super(context);
+    }
+
+    @Override
+    //? if >=1.21.9 {
+    public void submit(PoseStack matrices,
+    //?} else
+    //public void render(PoseStack matrices,
+            //? if >=1.21.9 {
+            SubmitNodeCollector output,
+            //?} else
+            //MultiBufferSource output,
+            int light, AvatarRenderState state, float limbAngle, float limbDistance) {
+        //? if >=1.21.8 {
+        SaturnPlayer player = state.getData(SaturnRenderState.saturnDataKey);
+        //?} else
+        //SaturnPlayer player = SaturnPlayer.get(state.name);
+
+        if (state.isInvisible || player == null || player.hat.isEmpty()) {
+            return;
+        }
+
+        matrices.pushPose();
+
+        // On the head, as vanilla places head items: the whole player (which emotes like the backflip
+        // turn), then the head's position, turn and scale (which crouching and emotes move)
+        PlayerModel model = this.getParentModel();
+        //? if >=1.21.5 {
+        model.root().translateAndRotate(matrices);
+        model.head.translateAndRotate(matrices);
+        //?} else {
+        /*model.root().translateAndRotate(matrices);
+        model.head.translateAndRotate(matrices);
+        *///?}
+
+        ObjModel.cosmetic("hat", player.hat).render(MtlLoader.cosmetic(player.hat),
+                matrices, output, light,
+                OverlayTexture.NO_OVERLAY);
+
+        matrices.popPose();
+    }
+}

src/main/java/org/saturnclient/impl/cosmetics/obj/MtlLoader.java

@@ -0,0 +1,56 @@
+package org.saturnclient.impl.cosmetics.obj;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import de.javagl.obj.*;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.resources.Identifier;
+
+public class MtlLoader {
+    static Map<Identifier, Map<String, Mtl>> loadedMtls = new HashMap<>();
+
+    static Map<String, Mtl> loadMtl(Identifier mtlId) throws IOException {
+        try (InputStream is = Minecraft.getInstance().getResourceManager()
+                .getResource(mtlId).get().open()) {
+            List<Mtl> mtlList = MtlReader.read(is);
+            Map<String, Mtl> mtlMap = new java.util.LinkedHashMap<>();
+            for (Mtl mtl : mtlList) {
+                mtlMap.put(mtl.getName(), mtl);
+            }
+            return mtlMap;
+        }
+    }
+
+    public static Map<String, Mtl> of(Identifier mtlId) {
+        if (loadedMtls.containsKey(mtlId))
+            return loadedMtls.get(mtlId);
+
+        try {
+            Map<String, Mtl> mtl = loadMtl(mtlId);
+            loadedMtls.put(mtlId, mtl);
+
+            return mtl;
+        } catch (IOException e) {
+            e.printStackTrace();
+
+            return null;
+        }
+
+    }
+
+    public static Map<String, Mtl> cosmetic(String cosmeticId) {
+        int index = cosmeticId.indexOf('_');
+
+        String mtlId = (index == -1) ? "" : cosmeticId.substring(index + 1);
+
+        if (mtlId.isEmpty())
+            mtlId = "white";
+
+        return of(Identifier.fromNamespaceAndPath("saturnclient", "models/cosmetic/materials/" + mtlId + ".mtl"));
+    }
+}

src/main/java/org/saturnclient/impl/cosmetics/obj/ObjModel.java

@@ -0,0 +1,118 @@
+package org.saturnclient.impl.cosmetics.obj;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import de.javagl.obj.Mtl;
+import de.javagl.obj.Obj;
+import net.minecraft.client.Minecraft;
+//? if >=1.21.9 {
+import net.minecraft.client.renderer.SubmitNodeCollector;
+//?} else
+//import net.minecraft.client.renderer.MultiBufferSource;
+import com.mojang.blaze3d.vertex.PoseStack;
+import org.joml.Quaternionf;
+import net.minecraft.server.packs.resources.Resource;
+import net.minecraft.server.packs.resources.ResourceManager;
+import net.minecraft.resources.Identifier;
+
+public class ObjModel {
+    private static final ObjectMapper MAPPER = new ObjectMapper();
+    public static final Map<Identifier, ObjModel> loadedObjModels = new HashMap<>();
+
+    public record Config(
+            @JsonProperty("translate") Vec3d transform,
+            @JsonProperty("scale") Vec3d scale,
+            @JsonProperty("rotation") Vec3d rotation) {
+
+        public Config {
+            transform = transform == null ? new Vec3d(0, 0, 0) : transform;
+            scale = scale == null ? new Vec3d(1, 1, 1) : scale;
+            rotation = rotation == null ? new Vec3d(0, 0, 0) : rotation;
+        }
+
+        @JsonFormat(shape = JsonFormat.Shape.ARRAY)
+        public record Vec3d(float x, float y, float z) {
+        }
+    }
+
+    Obj obj;
+    Config config;
+
+    public static ObjModel cosmetic(String cosmeticKind, String id) {
+        return of(Identifier.fromNamespaceAndPath("saturnclient", "models/cosmetic/" + cosmeticKind + "/" + id.split("_")[0] + "/model"));
+    }
+
+    public static ObjModel of(Identifier obj) {
+        if (loadedObjModels.containsKey(obj))
+            return loadedObjModels.get(obj);
+
+        ObjModel o = new ObjModel(obj);
+        loadedObjModels.put(obj, o);
+        return o;
+    }
+
+    ObjModel(Identifier identifier) {
+        Identifier objId = Identifier.fromNamespaceAndPath(identifier.getNamespace(), identifier.getPath() + ".obj");
+        Identifier jsonId = Identifier.fromNamespaceAndPath(identifier.getNamespace(), identifier.getPath() + ".json");
+
+        try {
+            this.obj = ObjRenderer.loadObj(objId);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        // Try loading JSON config if it exists
+        ResourceManager resourceManager = Minecraft.getInstance().getResourceManager();
+        Optional<Resource> resource = resourceManager.getResource(jsonId);
+
+        if (resource.isPresent()) {
+            try (InputStream stream = resource.get().open()) {
+                this.config = MAPPER.readValue(stream, Config.class);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public void render(Map<String, Mtl> mtlMap, PoseStack matrices,
+            //? if >=1.21.9 {
+            SubmitNodeCollector output,
+            //?} else
+            //MultiBufferSource output,
+            int light, int overlay) {
+        matrices.pushPose();
+
+        rotate(matrices, com.mojang.math.Axis.XP.rotationDegrees(180.0f));
+        rotate(matrices, com.mojang.math.Axis.YP.rotationDegrees(180.0f));
+
+        if (this.config != null) {
+            matrices.translate(config.transform.x, config.transform.y, config.transform.z);
+
+            matrices.scale(config.scale.x, config.scale.y, config.scale.z);
+
+            rotate(matrices, com.mojang.math.Axis.XP.rotationDegrees(config.rotation.x));
+            rotate(matrices, com.mojang.math.Axis.YP.rotationDegrees(config.rotation.y));
+            rotate(matrices, com.mojang.math.Axis.ZP.rotationDegrees(config.rotation.z));
+        }
+
+        ObjRenderer.renderObj(this.obj, mtlMap, matrices, output, light, overlay);
+
+        matrices.popPose();
+    }
+
+    // 26.3 renamed PoseStack's quaternion mulPose to rotate.
+    private static void rotate(PoseStack matrices, Quaternionf rotation) {
+        //? if >=26.3 {
+        /*matrices.rotate(rotation);
+        *///?} else
+        matrices.mulPose(rotation);
+    }
+}

src/main/java/org/saturnclient/impl/cosmetics/obj/ObjRenderer.java

@@ -0,0 +1,131 @@
+package org.saturnclient.impl.cosmetics.obj;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Map;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.impl.cosmetics.utils.ShaderUtils;
+
+import de.javagl.obj.*;
+
+import net.minecraft.client.Minecraft;
+//? if >=1.21.11 {
+import net.minecraft.client.renderer.rendertype.RenderType;
+//?} else
+//import net.minecraft.client.renderer.RenderType;
+import com.mojang.blaze3d.vertex.VertexConsumer;
+//? if >=1.21.9 {
+import net.minecraft.client.renderer.SubmitNodeCollector;
+//?} else
+//import net.minecraft.client.renderer.MultiBufferSource;
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.resources.Identifier;
+
+public class ObjRenderer {
+
+    public static Obj loadObj(Identifier objId) throws IOException {
+        try (InputStream is = Minecraft.getInstance().getResourceManager()
+                .getResource(objId).get().open()) {
+            return ObjReader.read(is);
+        }
+    }
+
+    public static void renderObj(Obj obj,
+            Map<String, Mtl> mtlMap,
+            PoseStack matrices,
+            //? if >=1.21.9 {
+            SubmitNodeCollector output,
+            //?} else
+            //MultiBufferSource output,
+            int light,
+            int overlay) {
+
+        Map<String, Obj> materialGroups = ObjSplitting.splitByMaterialGroups(obj);
+
+        for (Map.Entry<String, Obj> group : materialGroups.entrySet()) {
+            String materialName = group.getKey();
+            Obj groupObj = group.getValue();
+
+            Mtl mtl = mtlMap != null ? mtlMap.get(materialName) : null;
+
+            IdentifierRef texture = IdentifierRef.ofVanilla("textures/misc/white.png");
+
+            if (mtl != null) {
+                String mapKd = mtl.getMapKd();
+                if (mapKd != null && !mapKd.startsWith("#")) {
+                    texture = IdentifierRef.of(mapKd);
+                }
+            }
+
+            float r = 1f, g = 1f, b = 1f;
+            if (mtl != null) {
+                FloatTuple kd = mtl.getKd();
+                if (kd != null) {
+                    r = kd.getX();
+                    g = kd.getY();
+                    b = kd.getZ();
+                }
+            }
+
+            RenderType layer = ShaderUtils.getRenderLayer(texture);
+
+            final float fr = r, fg = g, fb = b;
+            final Obj finalObj = groupObj;
+
+            //? if >=1.21.9 {
+            output.submitCustomGeometry(matrices, layer,
+                    (entry, consumer) -> drawGroup(finalObj, consumer, entry, light, overlay, fr, fg, fb));
+            //?} else
+            //drawGroup(finalObj, output.getBuffer(layer), matrices.last(), light, overlay, fr, fg, fb);
+        }
+    }
+
+    private static void drawGroup(Obj obj, VertexConsumer consumer, PoseStack.Pose entry, int light, int overlay,
+            float r, float g, float b) {
+        int faces = obj.getNumFaces();
+
+        for (int f = 0; f < faces; f++) {
+            ObjFace face = obj.getFace(f);
+            int verts = face.getNumVertices();
+
+            for (int i = verts - 1; i >= 0; i--) {
+                writeVertex(obj, face, i, consumer, entry, light, overlay, r, g, b);
+            }
+        }
+    }
+
+    private static void writeVertex(Obj obj, ObjFace face, int index, VertexConsumer consumer,
+            PoseStack.Pose matrix, int light, int overlay,
+            float r, float g, float b) {
+
+        FloatTuple pos = obj.getVertex(face.getVertexIndex(index));
+        float x = pos.getX();
+        float y = pos.getY();
+        float z = pos.getZ();
+
+        float nx = 0f, ny = 1f, nz = 0f;
+        int normalIndex = face.getNormalIndex(index);
+        if (normalIndex >= 0) {
+            FloatTuple n = obj.getNormal(normalIndex);
+            nx = n.getX();
+            ny = n.getY();
+            nz = n.getZ();
+        }
+
+        float u = 0f, v = 0f;
+        int texIndex = face.getTexCoordIndex(index);
+        if (texIndex >= 0) {
+            FloatTuple tc = obj.getTexCoord(texIndex);
+            u = tc.getX();
+            v = 1f - tc.getY(); // Flip V: OBJ bottom-left origin -> Minecraft top-left
+        }
+
+        consumer.addVertex(matrix, x, y, z)
+                .setColor(r, g, b, 1f)
+                .setUv(u, v)
+                .setOverlay(overlay)
+                .setLight(light)
+                .setNormal(matrix, nx, ny, nz);
+    }
+}

src/main/java/org/saturnclient/impl/cosmetics/utils/IdentifierUtils.java

@@ -0,0 +1,74 @@
+package org.saturnclient.impl.cosmetics.utils;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.saturnclient.SaturnClient;
+
+import com.mojang.blaze3d.platform.NativeImage;
+import net.minecraft.client.renderer.texture.DynamicTexture;
+import net.minecraft.resources.Identifier;
+
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBufferInt;
+import java.util.Map;
+
+public class IdentifierUtils {
+
+    public static void registerBufferedImageTextureFast(IdentifierRef identifierRef, BufferedImage bufferedImage) {
+        try {
+            Identifier identifier = (Identifier) (Object) identifierRef;
+
+            int width = bufferedImage.getWidth();
+            int height = bufferedImage.getHeight();
+
+            NativeImage nativeImage = new NativeImage(NativeImage.Format.RGBA, width, height, false);
+
+            if (bufferedImage.getType() == BufferedImage.TYPE_INT_ARGB) {
+                int[] pixels = ((DataBufferInt) bufferedImage.getRaster().getDataBuffer()).getData();
+
+                int index = 0;
+                for (int y = 0; y < height; y++) {
+                    for (int x = 0; x < width; x++) {
+                        nativeImage.setPixel(x, y, pixels[index++]);
+                    }
+                }
+
+            } else {
+
+                for (int y = 0; y < height; y++) {
+                    for (int x = 0; x < width; x++) {
+                        nativeImage.setPixel(x, y, bufferedImage.getRGB(x, y));
+                    }
+                }
+
+            }
+
+            SaturnClient.client.execute(() -> {
+                //? if >=1.21.5 {
+                DynamicTexture texture = new DynamicTexture(
+                        () -> identifier.toString(),
+                        nativeImage);
+                //?} else
+                //DynamicTexture texture = new DynamicTexture(nativeImage);
+
+                SaturnClient.client.getTextureManager().register(identifier, texture);
+            });
+
+        } catch (Exception e) {
+            SaturnClient.LOGGER.error("Failed to register texture: {}", identifierRef, e);
+        }
+    }
+
+    public static void registerBufferedImageTexturesBulk(Map<IdentifierRef, BufferedImage> textures) {
+
+        long start = System.currentTimeMillis();
+
+        textures.forEach(IdentifierUtils::registerBufferedImageTextureFast);
+
+        long end = System.currentTimeMillis();
+
+        SaturnClient.LOGGER.info(
+                "Registered {} textures in {}ms",
+                textures.size(),
+                (end - start));
+    }
+}

src/main/java/org/saturnclient/impl/cosmetics/utils/ShaderUtils.java

@@ -0,0 +1,124 @@
+package org.saturnclient.impl.cosmetics.utils;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.cosmetics.utils.GifUtils;
+
+//? if >=1.21.5
+import com.mojang.blaze3d.pipeline.RenderPipeline;
+
+//? if >=1.21.5
+import net.minecraft.client.renderer.RenderPipelines;
+//? if >=1.21.11 {
+import net.minecraft.client.renderer.rendertype.RenderType;
+//?} else
+//import net.minecraft.client.renderer.RenderType;
+//? if <1.21.5 {
+/*import net.minecraft.client.renderer.RenderStateShard;
+import com.mojang.blaze3d.vertex.VertexFormat.Mode;
+import com.mojang.blaze3d.vertex.DefaultVertexFormat;
+*///?}
+//? if >=1.21.11 {
+import net.minecraft.client.renderer.rendertype.RenderTypes;
+import net.minecraft.client.renderer.rendertype.RenderSetup;
+import net.minecraft.client.renderer.blockentity.AbstractEndPortalRenderer;
+//?} else {
+/*import net.minecraft.client.renderer.RenderStateShard.MultiTextureStateShard;
+import net.minecraft.client.renderer.blockentity.TheEndPortalRenderer;
+*///?}
+import net.minecraft.resources.Identifier;
+//? if >=26.3
+//import com.mojang.renderpearl.api.pipeline.ColorTargetState;
+//? if >=26.1 {
+/*import java.util.HashMap;
+import java.util.Map;
+*///?}
+
+public class ShaderUtils {
+    // Render pipelines exist from 1.21.5; before that the layer names a shader program directly.
+    //? if >=1.21.5 {
+    public static final RenderPipeline END_GATEWAY_PIPELINE = RenderPipelines.register(
+            RenderPipeline.builder(new RenderPipeline.Snippet[] {
+                    RenderPipelines.END_PORTAL_SNIPPET })
+                    .withLocation("pipeline/end_gateway")
+                    .withShaderDefine("PORTAL_LAYERS", 16)
+                    .withCull(false)
+                    .build());
+    //?}
+
+    //? if >=1.21.11 {
+    public static final RenderType END_GATEWAY = RenderType.create("end_gateway",
+            RenderSetup.builder(END_GATEWAY_PIPELINE)
+                    .withTexture("Sampler0", AbstractEndPortalRenderer.END_SKY_LOCATION)
+                    .withTexture("Sampler1", AbstractEndPortalRenderer.END_PORTAL_LOCATION).createRenderSetup());
+    //?} else if >=1.21.6 {
+    /*public static final RenderType END_GATEWAY = RenderType.create("end_gateway", 1536, false, false,
+            END_GATEWAY_PIPELINE,
+            RenderType.CompositeState.builder()
+                    .setTextureState(MultiTextureStateShard.builder().add(TheEndPortalRenderer.END_SKY_LOCATION, false)
+                            .add(TheEndPortalRenderer.END_PORTAL_LOCATION, false).build())
+                    .createCompositeState(false));
+    *///?} else if >=1.21.5 {
+    /*public static final RenderType END_GATEWAY = RenderType.create("end_gateway", 1536, false, false,
+            END_GATEWAY_PIPELINE,
+            RenderType.CompositeState.builder()
+                    .setTextureState(MultiTextureStateShard.builder().add(TheEndPortalRenderer.END_SKY_LOCATION, false, false)
+                            .add(TheEndPortalRenderer.END_PORTAL_LOCATION, false, false).build())
+                    .createCompositeState(false));
+    *///?} else {
+    /*public static final RenderType END_GATEWAY = RenderType.create(
+            "end_gateway",
+            DefaultVertexFormat.POSITION,
+            Mode.QUADS,
+            1536,
+            false,
+            false,
+            RenderType.CompositeState.builder()
+                    .setShaderState(RenderType.RENDERTYPE_END_GATEWAY_SHADER)
+                    .setTextureState(MultiTextureStateShard.builder()
+                            .add(TheEndPortalRenderer.END_SKY_LOCATION, false, false)
+                            .add(TheEndPortalRenderer.END_PORTAL_LOCATION, false, false)
+                            .build())
+                    .setCullState(RenderStateShard.NO_CULL)
+                    .createCompositeState(false));
+    *///?}
+
+    public static RenderType getRenderLayer(IdentifierRef texture) {
+        String path = texture.toString();
+        if (path.endsWith(".gif")) {
+            return entityAlpha((Identifier) (Object) GifUtils.get(texture));
+        } else if (path.endsWith("end.png")) {
+            return END_GATEWAY;
+        } else {
+            return entityAlpha((Identifier) (Object) texture);
+        }
+    }
+
+    // Cosmetics are drawn unlit, without the lightmap or the directional shading, as the dragon's
+    // alpha pipeline drew them before 26.1. 26.1 dropped that pipeline, so this is the entity shader
+    // with its lighting and overlay turned off.
+    //? if >=26.1 {
+    /*public static final RenderPipeline UNLIT_CUTOUT_PIPELINE = RenderPipelines.register(
+            RenderPipeline.builder(new RenderPipeline.Snippet[] {
+                    RenderPipelines.ENTITY_EMISSIVE_SNIPPET })
+                    .withLocation(Identifier.fromNamespaceAndPath("saturnclient", "pipeline/unlit_cutout"))
+                    .withShaderDefine("ALPHA_CUTOUT", 0.1f)
+                    .withShaderDefine("NO_CARDINAL_LIGHTING")
+                    .withShaderDefine("NO_OVERLAY")
+                    .withCull(false)
+                    // From 26.3 the snippet leaves the color target to each pipeline.
+                    //? if >=26.3
+                    //.withColorTargetState(ColorTargetState.DEFAULT)
+                    .build());
+    private static final Map<Identifier, RenderType> UNLIT_CUTOUT = new HashMap<>();
+    *///?}
+
+    private static RenderType entityAlpha(Identifier texture) {
+        //? if >=26.1 {
+        /*return UNLIT_CUTOUT.computeIfAbsent(texture, id -> RenderType.create("saturn_unlit_cutout",
+                RenderSetup.builder(UNLIT_CUTOUT_PIPELINE).withTexture("Sampler0", id).createRenderSetup()));
+        *///?} else if >=1.21.11 {
+        return RenderTypes.dragonExplosionAlpha(texture);
+        //?} else
+        //return RenderType.dragonExplosionAlpha(texture);
+    }
+}

src/main/java/org/saturnclient/impl/features/entity/CameraOverriddenEntity.java

@@ -0,0 +1,11 @@
+package org.saturnclient.impl.features.entity;
+
+public interface CameraOverriddenEntity {
+    float freelook$getCameraPitch();
+
+    float freelook$getCameraYaw();
+
+    void freelook$setCameraPitch(float pitch);
+
+    void freelook$setCameraYaw(float yaw);
+}

src/main/java/org/saturnclient/impl/features/entity/EntityFeatureImpl.java

@@ -0,0 +1,78 @@
+package org.saturnclient.impl.features.entity;
+
+import org.saturnclient.common.feature.EntityFeature;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.phys.EntityHitResult;
+import net.minecraft.world.phys.HitResult;
+import net.minecraft.world.entity.LivingEntity;
+
+/**
+ * Fabric implementation of {@link EntityFeature}.
+ *
+ * Crosshair targeting is resolved via {@link MinecraftClient#crosshairTarget}.
+ * Entity state for nametags is built by LivingEntityRendererMixin, which
+ * writes health into the render state and then constructs a
+ * {@link RenderStateEntityState} from that snapshot for NametagsMod.
+ */
+public class EntityFeatureImpl implements EntityFeature {
+
+    private final Minecraft mc;
+
+    public EntityFeatureImpl(Minecraft mc) {
+        this.mc = mc;
+    }
+
+    @Override
+    public boolean isTargetingLivingEntity() {
+        HitResult target = mc.hitResult;
+        if (target == null || target.getType() != HitResult.Type.ENTITY)
+            return false;
+        Entity hit = ((EntityHitResult) target).getEntity();
+        return hit instanceof LivingEntity;
+    }
+
+    // ---------------------------------------------------------------
+    // Render-state adapter
+    // ---------------------------------------------------------------
+
+    /**
+     * Wraps a {@link HealthRenderState} (already injected into the
+     * Minecraft render-state object) as a platform-neutral
+     * {@link EntityState} for use by {@link NametagsFeature}.
+     *
+     * This is constructed in LivingEntityRendererMixin, where both the
+     * render-state mixin interface and the entity name are available.
+     */
+    public static final class RenderStateEntityState implements EntityState {
+
+        private final String customName;
+        private final HealthRenderState hrs;
+
+        public RenderStateEntityState(String customName, HealthRenderState hrs) {
+            this.customName = customName;
+            this.hrs = hrs;
+        }
+
+        @Override
+        public String getCustomName() {
+            return customName;
+        }
+
+        @Override
+        public float getHealth() {
+            return hrs.saturn$getHealth();
+        }
+
+        @Override
+        public float getMaxHealth() {
+            return hrs.saturn$getMaxHealth();
+        }
+
+        @Override
+        public EntityType getEntityType() {
+            return hrs.saturn$getEntityType();
+        }
+    }
+}

src/main/java/org/saturnclient/impl/features/entity/HealthRenderState.java

@@ -0,0 +1,24 @@
+package org.saturnclient.impl.features.entity;
+
+import org.saturnclient.common.feature.EntityFeature;
+
+/**
+ * Injected interface on
+ * {@link net.minecraft.client.render.entity.state.LivingEntityRenderState}.
+ *
+ * Carries the entity's health snapshot and classification into the render
+ * render state, so NametagsMod's replacement nametag (applied in
+ * LivingEntityRendererMixin) can use them without touching the live entity again.
+ */
+public interface HealthRenderState {
+
+    float saturn$getHealth();
+
+    float saturn$getMaxHealth();
+
+    void saturn$setHealth(float health, float maxHealth);
+
+    EntityFeature.EntityType saturn$getEntityType();
+
+    void saturn$setEntityType(EntityFeature.EntityType type);
+}

src/main/java/org/saturnclient/impl/features/mixins/entity/CameraMixin.java

@@ -0,0 +1,81 @@
+package org.saturnclient.impl.features.mixins.entity;
+
+import org.saturnclient.impl.features.entity.CameraOverriddenEntity;
+import org.saturnclient.impl.features.render.ZoomFov;
+import org.saturnclient.mod.mods.FreelookMod;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+//? if >=26.1
+//import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import net.minecraft.client.player.LocalPlayer;
+import net.minecraft.client.Camera;
+import net.minecraft.world.entity.Entity;
+//? if >=1.21.11 {
+import net.minecraft.world.level.Level;
+//?} else
+//import net.minecraft.world.level.BlockGetter;
+
+@Mixin(Camera.class)
+public abstract class CameraMixin {
+    @Unique
+    boolean firstTime = true;
+
+    @Shadow
+    protected abstract void setRotation(float yaw, float pitch);
+
+    // Freelook keeps the camera's rotation after vanilla points it along the entity's view. From 26.1
+    // that happens in alignWithEntity, which takes the camera's own entity.
+    //? if >=26.1 {
+    /*@Shadow
+    public abstract Entity entity();
+
+    @Inject(method = "alignWithEntity", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
+    public void lockRotation(float tickDelta, CallbackInfo ci) {
+        saturn$lockRotation(entity());
+    }
+
+    // The camera works out the FOV from 26.1 (GameRenderer.getFov before).
+    @Inject(method = "calculateFov", at = @At("RETURN"), cancellable = true)
+    private void onCalculateFov(float tickDelta, CallbackInfoReturnable<Float> cir) {
+        cir.setReturnValue(ZoomFov.apply(cir.getReturnValue()));
+    }
+    *///?} else if >=1.21.11 {
+    @Inject(method = "setup", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
+    public void lockRotation(Level focusedBlock, Entity cameraEntity, boolean isThirdPerson, boolean isFrontFacing,
+            float tickDelta, CallbackInfo ci) {
+        saturn$lockRotation(cameraEntity);
+    }
+    //?} else {
+    /*@Inject(method = "setup", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
+    public void lockRotation(BlockGetter focusedBlock, Entity cameraEntity, boolean isThirdPerson, boolean isFrontFacing,
+            float tickDelta, CallbackInfo ci) {
+        saturn$lockRotation(cameraEntity);
+    }
+    *///?}
+
+    @Unique
+    private void saturn$lockRotation(Entity cameraEntity) {
+        if (FreelookMod.isFreeLooking() && cameraEntity instanceof LocalPlayer) {
+            CameraOverriddenEntity cameraOverriddenEntity = (CameraOverriddenEntity) cameraEntity;
+
+            if (firstTime && SaturnClient.client.player != null) {
+                cameraOverriddenEntity.freelook$setCameraPitch(SaturnClient.client.player.getXRot());
+                cameraOverriddenEntity.freelook$setCameraYaw(SaturnClient.client.player.getYRot());
+                firstTime = false;
+            }
+            this.setRotation(cameraOverriddenEntity.freelook$getCameraYaw(),
+                    cameraOverriddenEntity.freelook$getCameraPitch());
+
+        }
+        if (!FreelookMod.isFreeLooking() && cameraEntity instanceof LocalPlayer) {
+            firstTime = true;
+        }
+    }
+
+}

src/main/java/org/saturnclient/impl/features/mixins/entity/EntityMixin.java

@@ -1,17 +1,17 @@
-package org.saturnclient.saturnclient.mixin;
+package org.saturnclient.impl.features.mixins.entity;
 
-import net.minecraft.client.network.ClientPlayerEntity;
-import net.minecraft.entity.Entity;
-import net.minecraft.util.math.MathHelper;
-
-import org.saturnclient.saturnclient.mod_utils.CameraOverriddenEntity;
-import org.saturnclient.saturnmods.mods.FreeLook;
+import org.saturnclient.impl.features.entity.CameraOverriddenEntity;
+import org.saturnclient.mod.mods.FreelookMod;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
+import net.minecraft.client.player.LocalPlayer;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.util.Mth;
+
 @Mixin(Entity.class)
 public class EntityMixin implements CameraOverriddenEntity {
     @Unique
@@ -20,15 +20,15 @@ public class EntityMixin implements CameraOverriddenEntity {
     @Unique
     private float cameraYaw;
 
-    @Inject(method = "changeLookDirection", at = @At("HEAD"), cancellable = true)
+    @Inject(method = "turn", at = @At("HEAD"), cancellable = true)
     public void changeCameraLookDirection(double xDelta, double yDelta, CallbackInfo ci) {
         // noinspection ConstantValue// IntelliJ is incorrect here, this code block is
         // reachable
-        if (FreeLook.isFreeLooking && (Object) this instanceof ClientPlayerEntity) {
+        if (FreelookMod.isFreeLooking() && (Object) this instanceof LocalPlayer) {
             double pitchDelta = (yDelta * 0.15);
             double yawDelta = (xDelta * 0.15);
 
-            this.cameraPitch = MathHelper.clamp(this.cameraPitch + (float) pitchDelta, -90.0f, 90.0f);
+            this.cameraPitch = Mth.clamp(this.cameraPitch + (float) pitchDelta, -90.0f, 90.0f);
             this.cameraYaw += (float) yawDelta;
 
             ci.cancel();

src/main/java/org/saturnclient/impl/features/mixins/render/BackgroundRendererMixin.java

@@ -0,0 +1,24 @@
+package org.saturnclient.impl.features.mixins.render;
+
+//? if >=1.21.6 {
+import net.minecraft.client.renderer.fog.FogRenderer;
+//?} else
+//import net.minecraft.client.renderer.FogRenderer;
+
+import org.saturnclient.mod.mods.NoFogMod;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyVariable;
+
+@Mixin(FogRenderer.class)
+public class BackgroundRendererMixin {
+    // fog
+    @ModifyVariable(method = "setupFog", at = @At("HEAD"), ordinal = 0, argsOnly = true)
+    private static float modifyFogStart(float viewDistance) {
+        if (NoFogMod.isActive()) {
+            return viewDistance * 2.0f;
+        }
+
+        return viewDistance;
+    }
+}

src/main/java/org/saturnclient/impl/features/mixins/render/GameRendererMixin.java

@@ -0,0 +1,65 @@
+package org.saturnclient.impl.features.mixins.render;
+
+//? if >=1.21.6
+import net.minecraft.client.Minecraft;
+//? if >=1.21.6
+import net.minecraft.client.Options;
+import net.minecraft.client.renderer.GameRenderer;
+
+//? if >=1.21.6
+import org.saturnclient.impl.ui.SaturnScreenFabric;
+//? if >=1.21.6
+import org.saturnclient.impl.ui.Screens;
+import org.saturnclient.impl.features.render.ZoomFov;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+//? if >=1.21.6
+import org.spongepowered.asm.mixin.injection.Redirect;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+/**
+ * Overrides the game's field-of-view when {@link org.saturnclient.mod.mods.ZoomMod} is active.
+ *
+ * The old code checked both {@code Zoom.isZooming} and
+ * {@code Zoom.shouldZoom()} separately. The refactored
+ * {@link org.saturnclient.mod.mods.ZoomMod#shouldZoom()} already ORs both conditions
+ * ({@code enabled.value && isZooming}), so only one check is needed.
+ *
+ * No {@link org.saturnclient.common.module.ModProvider} is required
+ * here because zooming is a pure render-time override with no per-tick
+ * engine queries.
+ */
+@Mixin(GameRenderer.class)
+public class GameRendererMixin {
+
+    /**
+     * After the vanilla FOV has been computed, divide it by the zoom
+     * level to produce the narrowed field-of-view.
+     */
+    // From 26.1 the camera works out the FOV, so CameraMixin applies the zoom there.
+    //? if <26.1 {
+    @Inject(method = "getFov", at = @At("RETURN"), cancellable = true)
+    private void onGetFov(CallbackInfoReturnable<Float> cir) {
+        cir.setReturnValue(ZoomFov.apply(cir.getReturnValue()));
+    }
+    //?}
+
+    //? if >=1.21.6 {
+    // From 1.21.6 the menu blur's strength is the vanilla setting, read here every frame. While a
+    // Saturn screen is open, it's Saturn's background blur instead, faded in with the screen.
+    // From 26.1 the setting is read while extracting the options' render state.
+    //? if >=26.1
+    //@Redirect(method = "extractOptions", at = @At(value = "INVOKE",
+    //? if <26.1
+    @Redirect(method = "render", at = @At(value = "INVOKE",
+            target = "Lnet/minecraft/client/Options;getMenuBackgroundBlurriness()I"))
+    private int useSaturnBlur(Options options) {
+        if (Screens.current() instanceof SaturnScreenFabric saturnScreen) {
+            return saturnScreen.screen.getBackgroundBlur();
+        }
+
+        return options.getMenuBackgroundBlurriness();
+    }
+    //?}
+}

src/main/java/org/saturnclient/impl/features/mixins/render/LightmapTextureManagerMixin.java

@@ -0,0 +1,45 @@
+package org.saturnclient.impl.features.mixins.render;
+
+// Code approach adapted from Gamma Utils: https://github.com/Sjouwer/gamma-utils
+
+import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
+//? if >=26.1 {
+/*import net.minecraft.client.renderer.LightmapRenderStateExtractor;
+*///?} else
+import net.minecraft.client.renderer.LightTexture;
+
+import org.saturnclient.mod.mods.FullbrightMod;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+
+/**
+ * Overrides the lightmap's gamma computation when
+ * {@link FullbrightMod} is active, replacing the vanilla
+ * brightness with a user-configured value.
+ *
+ * The old import was {@code org.saturnclient.feature.features.Fullbright};
+ * it is now {@link FullbrightMod}. The injection target and
+ * strategy are unchanged.
+ */
+// From 26.1 the gamma is worked out while extracting the lightmap's render state.
+//? if >=26.1 {
+/*@Mixin(LightmapRenderStateExtractor.class)
+*///?} else
+@Mixin(LightTexture.class)
+public class LightmapTextureManagerMixin {
+
+    /**
+     * If fullbright is active, substitute the feature's brightness
+     * value for whatever vanilla calculated.
+     */
+    //? if >=26.1 {
+    /*@ModifyExpressionValue(method = "extract", at = @At(value = "INVOKE", target = "Ljava/lang/Math;max(FF)F", ordinal = 0))
+    *///?} else
+    @ModifyExpressionValue(method = "updateLightTexture", at = @At(value = "INVOKE", target = "Ljava/lang/Math;max(FF)F", ordinal = 0))
+    private float modifyGamma(float original) {
+        if (FullbrightMod.shouldOverrideBrightness()) {
+            return FullbrightMod.getBrightnessValue();
+        }
+        return original;
+    }
+}

src/main/java/org/saturnclient/impl/features/mixins/render/LivingEntityRenderStateMixin.java

@@ -0,0 +1,59 @@
+package org.saturnclient.impl.features.mixins.render;
+
+import net.minecraft.client.renderer.entity.state.LivingEntityRenderState;
+
+import org.saturnclient.common.feature.EntityFeature;
+import org.saturnclient.impl.features.entity.HealthRenderState;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+
+/**
+ * Implements {@link HealthRenderState} on
+ * {@link LivingEntityRenderState}, injecting health and entity-type
+ * storage into every living entity's render-state snapshot.
+ *
+ * Previously imported {@code NametagsInterface.EntityType}; the enum
+ * now lives in {@link EntityFeature.EntityType} which is the single
+ * canonical definition shared by the mixin layer and the feature layer.
+ *
+ * The stored values are written by
+ * {@link LivingEntityRendererMixin#saturn$captureHealth} each time a
+ * render state is extracted from a live entity, and read there right away for
+ * NametagsMod's replacement nametag.
+ */
+@Mixin(LivingEntityRenderState.class)
+public class LivingEntityRenderStateMixin implements HealthRenderState {
+
+    @Unique
+    private float saturn$health = 0f;
+    @Unique
+    private float saturn$maxHealth = 1f;
+    @Unique
+    private EntityFeature.EntityType saturn$entityType = EntityFeature.EntityType.OTHER;
+
+    @Override
+    public float saturn$getHealth() {
+        return saturn$health;
+    }
+
+    @Override
+    public float saturn$getMaxHealth() {
+        return saturn$maxHealth;
+    }
+
+    @Override
+    public void saturn$setHealth(float health, float maxHealth) {
+        this.saturn$health = health;
+        this.saturn$maxHealth = maxHealth;
+    }
+
+    @Override
+    public EntityFeature.EntityType saturn$getEntityType() {
+        return saturn$entityType;
+    }
+
+    @Override
+    public void saturn$setEntityType(EntityFeature.EntityType type) {
+        saturn$entityType = type;
+    }
+}

src/main/java/org/saturnclient/impl/features/mixins/render/LivingEntityRendererMixin.java

@@ -0,0 +1,62 @@
+package org.saturnclient.impl.features.mixins.render;
+
+import net.minecraft.client.renderer.entity.LivingEntityRenderer;
+import net.minecraft.client.renderer.entity.state.LivingEntityRenderState;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.entity.monster.Monster;
+import net.minecraft.world.entity.AgeableMob;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.network.chat.Component;
+
+import org.saturnclient.common.feature.EntityFeature;
+import org.saturnclient.impl.features.entity.EntityFeatureImpl;
+import org.saturnclient.impl.features.entity.HealthRenderState;
+import org.saturnclient.mod.mods.NametagsMod;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+/**
+ * Captures each living entity's health and type into the render state during
+ * {@code updateRenderState}, and applies {@link NametagsMod}'s replacement nametag to the state's
+ * display name.
+ *
+ * Replacing the name here, while the render state is built, works the same on every version. Hooking
+ * label rendering instead doesn't: 1.21.9 moved it to the render command queue. Player role icons are
+ * added after this, in PlayerEntityRendererMixin.
+ */
+@Mixin(LivingEntityRenderer.class)
+public abstract class LivingEntityRendererMixin<T extends LivingEntity, S extends LivingEntityRenderState> {
+
+    @Inject(method = "extractRenderState", at = @At("TAIL"))
+    private void saturn$captureHealth(T entity, S state, float tickDelta, CallbackInfo ci) {
+        if (!(state instanceof HealthRenderState hrs))
+            return;
+
+        hrs.saturn$setHealth(entity.getHealth(), entity.getMaxHealth());
+
+        // Classify entity type for the nametag feature's filtering logic
+        EntityFeature.EntityType type;
+        if (entity instanceof Player)
+            type = EntityFeature.EntityType.PLAYER;
+        else if (entity instanceof Monster)
+            type = EntityFeature.EntityType.HOSTILE;
+        else if (entity instanceof AgeableMob)
+            type = EntityFeature.EntityType.PASSIVE;
+        else
+            type = EntityFeature.EntityType.OTHER;
+
+        hrs.saturn$setEntityType(type);
+
+        // Only entities that already show a label get a replacement one, as when this hooked label
+        // rendering.
+        if (NametagsMod.shouldReplaceName() && state.nameTag != null) {
+            String replacement = NametagsMod.getNametagString(
+                    new EntityFeatureImpl.RenderStateEntityState(state.nameTag.getString(), hrs));
+            if (replacement != null) {
+                state.nameTag = Component.literal(replacement);
+            }
+        }
+    }
+}

src/main/java/org/saturnclient/impl/features/mixins/render/RenderMixin.java

@@ -0,0 +1,93 @@
+package org.saturnclient.impl.features.mixins.render;
+
+import net.minecraft.client.gui.Font;
+import net.minecraft.client.gui.GuiGraphics;
+//? if >=26.2 {
+/*import net.minecraft.client.gui.Hud;
+*///?} else
+import net.minecraft.client.gui.Gui;
+import net.minecraft.client.DeltaTracker;
+
+import org.saturnclient.impl.ui.RenderScopeImpl;
+import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
+import org.saturnclient.mod.HudMod;
+import org.saturnclient.mod.Mod;
+import org.saturnclient.mod.ModLayout;
+import org.saturnclient.mod.ModManager;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.saturnclient.ui.RenderScope;
+import org.saturnclient.ui.screens.HudEditor;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+/**
+ * Drives per-frame rendering for all registered features.
+ *
+ * This mixin is intentionally kept thin: it creates a {@link RenderScope},
+ * iterates the enabled feature list from {@link ModManager}, and
+ * dispatches either {@link HudMod#renderHud} (for HUD elements) or
+ * {@link Mod#render} (for world-overlay features like Crosshair).
+ *
+ * No feature-specific logic lives here — all decisions about what to
+ * draw are made inside each feature class.
+ *
+ * Changes from the original:
+ * - Package imports updated to the refactored feature names (no
+ * more {@code feature.features.*}).
+ * - The HUD-editor screen check still uses the existing
+ * {@link SaturnScreenFabric} / {@link HudEditor} pair; that is
+ * unchanged infrastructure.
+ */
+// The HUD is drawn by Hud from 26.2 (by Gui before).
+//? if >=26.2 {
+/*@Mixin(Hud.class)
+*///?} else
+@Mixin(Gui.class)
+public class RenderMixin {
+
+    //? if >=26.1 {
+    /*@Inject(method = "extractChat", at = @At("TAIL"))
+    *///?} else
+    @Inject(method = "renderChat", at = @At("TAIL"))
+    public void renderMods(GuiGraphics context, DeltaTracker tickCounter, CallbackInfo ci) {
+        Font textRenderer = SaturnClient.client.font;
+
+        // Skip rendering while the HUD editor is open so the editor
+        // can draw its own preview layout without double-drawing.
+        if (textRenderer == null)
+            return;
+        if (Screens.current() instanceof SaturnScreenFabric f
+                && f.screen instanceof HudEditor)
+            return;
+
+        RenderScope scope = new RenderScopeImpl(context);
+
+        for (Mod feature : ModManager.ENABLED_MODS) {
+            if (!feature.isEnabled())
+                continue;
+
+            if (feature instanceof HudMod hud) {
+                ModLayout dim = hud.getDimensions();
+
+                scope.getMatrixStack().push();
+                scope.getMatrixStack().translate(dim.x.value, (float) dim.y.value);
+                scope.getMatrixStack().scale(dim.scale.value, dim.scale.value);
+
+                if (dim.renderBackground) {
+                    scope.drawRoundedRectangle(0, 0, dim.width, dim.height,
+                            dim.radius.value, dim.bgColor.value);
+                }
+
+                hud.renderHud(scope);
+                scope.getMatrixStack().pop();
+
+            } else {
+                // Non-HUD features (e.g. CrosshairFeature) use the plain render hook.
+                feature.render(scope);
+            }
+        }
+    }
+}

src/main/java/org/saturnclient/impl/features/mixins/world/TpsMixin.java

@@ -0,0 +1,30 @@
+package org.saturnclient.impl.features.mixins.world;
+
+import net.minecraft.client.multiplayer.ClientPacketListener;
+import net.minecraft.network.protocol.game.ClientboundSetTimePacket;
+
+import org.saturnclient.mod.mods.TpsMod;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+/**
+ * Feeds world-time packets into {@link TpsMod}'s TPS estimator.
+ *
+ * This is the only place in the entire codebase that reads a network
+ * packet and passes data to a feature. The feature's
+ * {@link TpsMod#onTimePacket(long)} method handles all averaging
+ * logic; the mixin is intentionally reduced to a single forwarding call.
+ *
+ * The only change from the original is renaming the import from
+ * {@code feature.features.Tps} to {@link TpsMod}.
+ */
+@Mixin(ClientPacketListener.class)
+public class TpsMixin {
+
+    @Inject(method = "handleSetTime", at = @At("HEAD"))
+    private void onWorldTimeUpdate(ClientboundSetTimePacket packet, CallbackInfo ci) {
+        TpsMod.onTimePacket(packet.gameTime());
+    }
+}

src/main/java/org/saturnclient/impl/features/network/NetworkFeatureImpl.java

@@ -0,0 +1,37 @@
+package org.saturnclient.impl.features.network;
+
+import org.saturnclient.common.feature.NetworkFeature;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.multiplayer.PlayerInfo;
+
+/**
+ * Fabric implementation of {@link NetworkFeature}.
+ *
+ * Connection presence is checked via the network handler.
+ * Ping is read from the player's {@link PlayerListEntry} which the
+ * server populates; returns {@code -1} when unavailable.
+ */
+public class NetworkFeatureImpl implements NetworkFeature {
+
+    private final Minecraft mc;
+
+    public NetworkFeatureImpl(Minecraft mc) {
+        this.mc = mc;
+    }
+
+    @Override
+    public boolean hasNetwork() {
+        return mc.getConnection() != null;
+    }
+
+    @Override
+    public int getPing() {
+        if (mc.player == null || mc.getConnection() == null)
+            return -1;
+
+        PlayerInfo entry = mc.getConnection().getPlayerInfo(mc.player.getUUID());
+
+        return entry != null ? entry.getLatency() : -1;
+    }
+}

src/main/java/org/saturnclient/impl/features/player/PlayerFeatureImpl.java

@@ -0,0 +1,266 @@
+package org.saturnclient.impl.features.player;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.player.LocalPlayer;
+import net.minecraft.world.entity.EquipmentSlot;
+import net.minecraft.world.effect.MobEffectInstance;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.Items;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.resources.Identifier;
+
+import org.saturnclient.common.feature.PlayerFeature;
+import org.saturnclient.common.ref.game.EffectRef;
+import org.saturnclient.common.ref.game.ItemStackRef;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Fabric implementation of {@link PlayerFeature}.
+ *
+ * All access to {@link MinecraftClient} and {@link ClientPlayerEntity}
+ * is encapsulated here. Features only ever see the {@link PlayerFeature}
+ * interface; they never import Minecraft classes directly.
+ *
+ * Every method guards against a missing player and returns a safe
+ * default so features are free of null checks.
+ */
+public class PlayerFeatureImpl implements PlayerFeature {
+
+    private final Minecraft mc;
+
+    public PlayerFeatureImpl(Minecraft mc) {
+        this.mc = mc;
+    }
+
+    // ---------------------------------------------------------------
+    // Internal helper — never returns null
+    // ---------------------------------------------------------------
+
+    /** Returns the local player, or {@code null} if one is not loaded. */
+    private LocalPlayer player() {
+        return mc.player;
+    }
+
+    // ---------------------------------------------------------------
+    // Presence
+    // ---------------------------------------------------------------
+
+    @Override
+    public boolean hasPlayer() {
+        return mc.player != null;
+    }
+
+    // ---------------------------------------------------------------
+    // Position
+    // ---------------------------------------------------------------
+
+    @Override
+    public int getX() {
+        return hasPlayer() ? (int) player().getX() : 0;
+    }
+
+    @Override
+    public int getY() {
+        return hasPlayer() ? (int) player().getY() : 0;
+    }
+
+    @Override
+    public int getZ() {
+        return hasPlayer() ? (int) player().getZ() : 0;
+    }
+
+    // ---------------------------------------------------------------
+    // Input / movement
+    // ---------------------------------------------------------------
+
+    @Override
+    public boolean isForwardPressed() {
+        return mc.options.keyUp.isDown();
+    }
+
+    @Override
+    public boolean isBackPressed() {
+        return mc.options.keyDown.isDown();
+    }
+
+    @Override
+    public boolean isLeftPressed() {
+        return mc.options.keyLeft.isDown();
+    }
+
+    @Override
+    public boolean isRightPressed() {
+        return mc.options.keyRight.isDown();
+    }
+
+    @Override
+    public boolean isJumpPressed() {
+        return mc.options.keyJump.isDown();
+    }
+
+    @Override
+    public boolean isAttackPressed() {
+        return mc.options.keyAttack.isDown();
+    }
+
+    @Override
+    public boolean isUsePressed() {
+        return mc.options.keyUse.isDown();
+    }
+
+    @Override
+    public boolean isSneaking() {
+        return hasPlayer() && player().isShiftKeyDown();
+    }
+
+    @Override
+    public boolean isUsingItem() {
+        return hasPlayer() && player().isUsingItem();
+    }
+
+    @Override
+    public boolean hasHorizontalCollision() {
+        return hasPlayer() && player().horizontalCollision;
+    }
+
+    @Override
+    public boolean isOnGround() {
+        return hasPlayer() && player().onGround();
+    }
+
+    @Override
+    public void setSprinting(boolean sprinting) {
+        if (hasPlayer())
+            player().setSprinting(sprinting);
+    }
+
+    // ---------------------------------------------------------------
+    // Velocity
+    // ---------------------------------------------------------------
+
+    @Override
+    public Velocity getVelocity() {
+        if (!hasPlayer())
+            return Velocity.ZERO;
+        var v = player().getDeltaMovement();
+        return new Velocity(v.x, v.y, v.z);
+    }
+
+    // ---------------------------------------------------------------
+    // Stats
+    // ---------------------------------------------------------------
+
+    @Override
+    public float getHealth() {
+        return hasPlayer() ? player().getHealth() : 0f;
+    }
+
+    // ---------------------------------------------------------------
+    // Equipment
+    // ---------------------------------------------------------------
+
+    @Override
+    public ItemStackRef getMainHand() {
+        return wrap(hasPlayer() ? player().getMainHandItem() : ItemStack.EMPTY);
+    }
+
+    @Override
+    public ItemStackRef getHelmet() {
+        //? if >=1.21.5 {
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.HEAD) : ItemStack.EMPTY);
+        //?} else
+        //return wrap(hasPlayer() ? player().getInventory().armor.get(3) : ItemStack.EMPTY);
+    }
+
+    @Override
+    public ItemStackRef getChestplate() {
+        //? if >=1.21.5 {
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.CHEST) : ItemStack.EMPTY);
+        //?} else
+        //return wrap(hasPlayer() ? player().getInventory().armor.get(2) : ItemStack.EMPTY);
+    }
+
+    @Override
+    public ItemStackRef getLeggings() {
+        //? if >=1.21.5 {
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.LEGS) : ItemStack.EMPTY);
+        //?} else
+        //return wrap(hasPlayer() ? player().getInventory().armor.get(1) : ItemStack.EMPTY);
+    }
+
+    @Override
+    public ItemStackRef getBoots() {
+        //? if >=1.21.5 {
+        return wrap(hasPlayer() ? player().getItemBySlot(EquipmentSlot.FEET) : ItemStack.EMPTY);
+        //?} else
+        //return wrap(hasPlayer() ? player().getInventory().armor.get(0) : ItemStack.EMPTY);
+    }
+
+    // ---------------------------------------------------------------
+    // Dummy equipment
+    // ---------------------------------------------------------------
+
+    @Override
+    public ItemStackRef getDummyMainHand() {
+        return wrap(new ItemStack(Items.DIAMOND_SWORD));
+    }
+
+    @Override
+    public ItemStackRef getDummyHelmet() {
+        return wrap(new ItemStack(Items.DIAMOND_HELMET));
+    }
+
+    @Override
+    public ItemStackRef getDummyChestplate() {
+        return wrap(new ItemStack(Items.DIAMOND_CHESTPLATE));
+    }
+
+    @Override
+    public ItemStackRef getDummyLeggings() {
+        return wrap(new ItemStack(Items.DIAMOND_LEGGINGS));
+    }
+
+    @Override
+    public ItemStackRef getDummyBoots() {
+        return wrap(new ItemStack(Items.DIAMOND_BOOTS));
+    }
+
+    // ---------------------------------------------------------------
+    // Status effects
+    // ---------------------------------------------------------------
+
+    @Override
+    public List<? extends EffectRef> getActiveEffects() {
+        if (!hasPlayer())
+            return Collections.emptyList();
+
+        var effects = player().getActiveEffectsMap().values();
+        List<EffectRef> result = new ArrayList<>(effects.size());
+        for (MobEffectInstance instance : effects) {
+            result.add((EffectRef) instance);
+        }
+        return result;
+    }
+
+    @Override
+    public List<? extends EffectRef> getDummyEffects() {
+        return List.of(
+                (EffectRef) new MobEffectInstance(
+                        BuiltInRegistries.MOB_EFFECT.get(Identifier.withDefaultNamespace("speed")).get(), 12000, 2),
+                (EffectRef) new MobEffectInstance(
+                        BuiltInRegistries.MOB_EFFECT.get(Identifier.withDefaultNamespace("strength")).get(), 12000, 2),
+                (EffectRef) new MobEffectInstance(
+                        BuiltInRegistries.MOB_EFFECT.get(Identifier.withDefaultNamespace("fire_resistance")).get(), 12000, 2));
+    }
+
+    // ---------------------------------------------------------------
+    // Helpers
+    // ---------------------------------------------------------------
+
+    private static ItemStackRef wrap(ItemStack stack) {
+        return (ItemStackRef) (Object) stack;
+    }
+}

src/main/java/org/saturnclient/impl/features/render/RenderFeatureImpl.java

@@ -0,0 +1,64 @@
+package org.saturnclient.impl.features.render;
+
+import org.saturnclient.common.feature.RenderFeature;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.CameraType;
+
+/**
+ * Fabric implementation of {@link RenderFeature}.
+ *
+ * Window dimensions and FPS are read directly from
+ * {@link MinecraftClient}. Camera perspective control delegates to
+ * {@link net.minecraft.client.option.GameOptions}.
+ */
+public class RenderFeatureImpl implements RenderFeature {
+
+    private final Minecraft mc;
+
+    public RenderFeatureImpl(Minecraft mc) {
+        this.mc = mc;
+    }
+
+    // ---------------------------------------------------------------
+    // Window
+    // ---------------------------------------------------------------
+
+    @Override
+    public int getScaledWindowWidth() {
+        return mc.getWindow().getGuiScaledWidth();
+    }
+
+    @Override
+    public int getScaledWindowHeight() {
+        return mc.getWindow().getGuiScaledHeight();
+    }
+
+    // ---------------------------------------------------------------
+    // Performance
+    // ---------------------------------------------------------------
+
+    @Override
+    public int getFps() {
+        return mc.getFps();
+    }
+
+    // ---------------------------------------------------------------
+    // Camera perspective
+    // ---------------------------------------------------------------
+
+    @Override
+    public boolean isFirstPerson() {
+        return mc.options.getCameraType() == CameraType.FIRST_PERSON;
+    }
+
+    @Override
+    public void setFirstPerson() {
+        mc.options.setCameraType(CameraType.FIRST_PERSON);
+    }
+
+    @Override
+    public void setThirdPersonBack() {
+        mc.options.setCameraType(CameraType.THIRD_PERSON_BACK);
+    }
+}

src/main/java/org/saturnclient/impl/features/render/ZoomFov.java

@@ -0,0 +1,19 @@
+package org.saturnclient.impl.features.render;
+
+import org.saturnclient.mod.mods.FreelookMod;
+import org.saturnclient.mod.mods.ZoomMod;
+
+/** The zoom mods' change to the field of view, applied where each version computes it. */
+public final class ZoomFov {
+    private ZoomFov() {
+    }
+
+    public static float apply(float fov) {
+        if (ZoomMod.shouldZoom()) {
+            return fov / ZoomMod.getZoomLevel();
+        } else if (FreelookMod.shouldZoomOut()) {
+            return fov / FreelookMod.getZoomLevel();
+        }
+        return fov;
+    }
+}

src/main/java/org/saturnclient/impl/features/world/WorldFeatureImpl.java

@@ -0,0 +1,37 @@
+package org.saturnclient.impl.features.world;
+
+import org.saturnclient.common.feature.WorldFeature;
+
+import net.minecraft.client.Minecraft;
+
+/**
+ * Fabric implementation of {@link WorldFeature}.
+ *
+ * Reads the client world's time directly from {@link MinecraftClient}.
+ * Returns safe defaults when no world is loaded.
+ */
+public class WorldFeatureImpl implements WorldFeature {
+
+    private final Minecraft mc;
+
+    public WorldFeatureImpl(Minecraft mc) {
+        this.mc = mc;
+    }
+
+    @Override
+    public boolean hasWorld() {
+        return mc.level != null;
+    }
+
+    /**
+     * Returns the total world age in ticks, or {@code 0} when no world
+     * is loaded. Used by {@link TpsFeature#onTimePacket} (which is
+     * called from the mixin and stores its own copy) and by
+     * {@link DayCounterFeature} for the day count.
+     */
+    @Override
+    public long getWorldAge() {
+        // World.getTime() was a shortcut for this, and 1.21.11 removed it.
+        return hasWorld() ? mc.level.getLevelData().getGameTime() : 0L;
+    }
+}

src/main/java/org/saturnclient/impl/mixins/IdentifierMixin.java

@@ -0,0 +1,13 @@
+package org.saturnclient.impl.mixins;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import net.minecraft.resources.Identifier;
+
+@Mixin(Identifier.class)
+public abstract class IdentifierMixin implements IdentifierRef {
+    @Shadow
+    public abstract String toString();
+}

src/main/java/org/saturnclient/impl/mixins/ItemStackMixin.java

@@ -0,0 +1,35 @@
+package org.saturnclient.impl.mixins;
+
+import org.saturnclient.common.ref.game.ItemStackRef;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import net.minecraft.world.item.ItemStack;
+
+@Mixin(ItemStack.class)
+public abstract class ItemStackMixin implements ItemStackRef {
+    @Shadow
+    public abstract boolean isEmpty();
+
+    @Shadow
+    public abstract int getMaxDamage();
+
+    @Shadow
+    public abstract int getDamageValue();
+
+    // ItemStackRef's methods delegate to ItemStack's, whose names production renames.
+    @Override
+    public boolean isEmptyStack() {
+        return isEmpty();
+    }
+
+    @Override
+    public int getMaxItemDamage() {
+        return getMaxDamage();
+    }
+
+    @Override
+    public int getItemDamage() {
+        return getDamageValue();
+    }
+}

src/main/java/org/saturnclient/impl/mixins/MatrixStackMixin.java

@@ -0,0 +1,79 @@
+package org.saturnclient.impl.mixins;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+import org.spongepowered.asm.mixin.Mixin;
+//? if <1.21.6 {
+/*import org.saturnclient.common.ref.render.MatrixStackRef;
+//? if >=1.21.5
+import org.joml.Quaternionfc;
+//? if <1.21.5
+//import org.joml.Quaternionf;
+import org.spongepowered.asm.mixin.Shadow;
+import com.mojang.math.Axis;
+*///?}
+
+/**
+ * Makes MatrixStack a MatrixStackRef, for GUI drawing before 1.21.6. From 1.21.6 the GUI uses a 2D
+ * Matrix3x2fStack (Matrix3x2fStackRef) instead, so this mixin is empty but stays registered, keeping
+ * impl.mixins.json the same for every version.
+ */
+@Mixin(PoseStack.class)
+//? if <1.21.6 {
+/*public abstract class MatrixStackMixin implements MatrixStackRef {
+    @Shadow
+    public abstract void pushPose();
+
+    @Shadow
+    public abstract void popPose();
+
+    @Shadow
+    public abstract void translate(float x, float y, float z);
+
+    @Shadow
+    public abstract void scale(float x, float y, float z);
+
+    @Shadow
+    //? if >=1.21.5
+    public abstract void mulPose(Quaternionfc quaternion);
+    //? if <1.21.5
+    //public abstract void mulPose(Quaternionf quaternion);
+
+    @Shadow
+    //? if >=1.21.5
+    public abstract void rotateAround(Quaternionfc quaternion, float originX, float originY, float originZ);
+    //? if <1.21.5
+    //public abstract void rotateAround(Quaternionf quaternion, float originX, float originY, float originZ);
+
+    // MatrixStackRef's methods delegate to PoseStack's, whose names production renames.
+    @Override
+    public void push() {
+        pushPose();
+    }
+
+    @Override
+    public void pop() {
+        popPose();
+    }
+
+    @Override
+    public void translate(float x, float y) {
+        translate(x, y, 0);
+    }
+
+    @Override
+    public void scale(float x, float y) {
+        scale(x, y, 1.0f);
+    }
+
+    @Override
+    public void rotate(float angle, float originX, float originY, float originZ) {
+        rotateAround(Axis.ZN.rotationDegrees(angle), originX, originY, originZ);
+    }
+
+    @Override
+    public void rotate(float angle) {
+        mulPose(Axis.ZN.rotationDegrees(angle));
+    }
+}
+*///?} else
+public abstract class MatrixStackMixin {}

src/main/java/org/saturnclient/impl/mixins/MinecraftClientMixin.java

@@ -0,0 +1,174 @@
+package org.saturnclient.impl.mixins;
+
+import java.io.File;
+import java.io.InputStream;
+import java.util.UUID;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.common.ref.game.MinecraftClientRef;
+import org.saturnclient.common.ref.render.WindowRef;
+import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
+import org.saturnclient.ui.SaturnScreen;
+import org.saturnclient.ui.screens.TitleMenu;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.screens.multiplayer.JoinMultiplayerScreen;
+import net.minecraft.client.gui.screens.options.OptionsScreen;
+import net.minecraft.client.gui.screens.worldselection.SelectWorldScreen;
+import net.minecraft.client.Options;
+import net.minecraft.client.User;
+import com.mojang.blaze3d.platform.Window;
+import net.minecraft.server.packs.resources.ReloadableResourceManager;
+import net.minecraft.resources.Identifier;
+
+@Mixin(Minecraft.class)
+public abstract class MinecraftClientMixin implements MinecraftClientRef {
+    @Shadow
+    public File gameDirectory;
+
+    @Shadow
+    private Window window;
+
+    @Shadow
+    private ReloadableResourceManager resourceManager;
+
+    @Shadow
+    public Options options;
+
+    @Shadow
+    private User user;
+
+    @Shadow
+    public abstract void stop();
+
+    @Override
+    public void scheduleStop() {
+        stop();
+    }
+
+    @Override
+    public File getRunDirectory() {
+        return gameDirectory;
+    }
+
+    @Override
+    public InputStream getResource(IdentifierRef identifier) {
+        try {
+            return resourceManager.getResource((Identifier) (Object) identifier).get().open();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    @Override
+    public WindowRef getWindow() {
+        return (WindowRef) (Object) this.window;
+    }
+
+    @Override
+    public void setScreen(SaturnScreen screen) {
+        Screens.set(new SaturnScreenFabric(screen));
+    }
+
+    @Override
+    public void setScreen(MinecraftScreen screen) {
+        SaturnScreenFabric exitTarget = new SaturnScreenFabric(new TitleMenu());
+
+        switch (screen) {
+            case SelectWorld:
+                Screens.set(new SelectWorldScreen(exitTarget));
+                break;
+
+            case Multiplayer:
+                Screens.set(new JoinMultiplayerScreen(exitTarget));
+                break;
+
+            case Options:
+                // Only 26.1 and 26.2 take whether a world is open.
+                //? if >=26.3 {
+                /*Screens.set(new OptionsScreen(exitTarget, this.options));
+                *///?} else if >=26.1 {
+                /*Screens.set(new OptionsScreen(exitTarget, this.options, ((Minecraft) (Object) this).level != null));
+                *///?} else
+                Screens.set(new OptionsScreen(exitTarget, this.options));
+                break;
+        }
+    }
+
+    @Override
+    public String getAccessToken() {
+        if (user == null) {
+            return null;
+        }
+
+        return this.user.getAccessToken();
+    }
+
+    @Override
+    public UUID getUuid() {
+        if (user == null) {
+            return null;
+        }
+        return this.user.getProfileId();
+    }
+
+    @Override
+    public String getUsername() {
+        if (user == null) {
+            return null;
+        }
+        return this.user.getName();
+    }
+
+    @Override
+    public void onClientStopping(Runnable handler) {
+        ClientLifecycleEvents.CLIENT_STOPPING.register(_o -> handler.run());
+    }
+
+    @Override
+    public void executeOnThread(Runnable runnable) {
+        ((java.util.concurrent.Executor) (Object) this).execute(runnable);
+    }
+
+    @Override
+    @SuppressWarnings("resource")
+    public String getPlayerListEntry(UUID uuid) {
+        var client = (Minecraft) (Object) this;
+        var handler = client.getConnection();
+
+        if (handler == null)
+            return null;
+
+        var entry = handler.getPlayerInfo(uuid);
+        if (entry == null)
+            return null;
+
+        //? if >=1.21.9 {
+        return entry.getProfile().name();
+        //?} else
+        //return entry.getProfile().getName();
+    }
+
+    @Override
+    @SuppressWarnings("resource")
+    public UUID getPlayerListEntryUUID(String name) {
+        var client = (Minecraft) (Object) this;
+        var handler = client.getConnection();
+
+        if (handler == null)
+            return null;
+
+        var entry = handler.getPlayerInfo(name);
+        if (entry == null)
+            return null;
+
+        //? if >=1.21.9 {
+        return entry.getProfile().id();
+        //?} else
+        //return entry.getProfile().getId();
+    }
+}

src/main/java/org/saturnclient/impl/mixins/QuaternionfMixin.java

@@ -0,0 +1,9 @@
+package org.saturnclient.impl.mixins;
+
+import org.joml.Quaternionf;
+import org.saturnclient.common.ref.render.QuaternionfRef;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(Quaternionf.class)
+public abstract class QuaternionfMixin implements QuaternionfRef {
+}

src/main/java/org/saturnclient/impl/mixins/SpriteMixin.java

@@ -0,0 +1,9 @@
+package org.saturnclient.impl.mixins;
+
+import net.minecraft.client.renderer.texture.TextureAtlasSprite;
+import org.saturnclient.common.ref.asset.SpriteRef;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(TextureAtlasSprite.class)
+public abstract class SpriteMixin implements SpriteRef {
+}

src/main/java/org/saturnclient/impl/mixins/StatusEffectMixin.java

@@ -0,0 +1,79 @@
+package org.saturnclient.impl.mixins;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.common.ref.asset.SpriteRef;
+import org.saturnclient.common.ref.game.EffectRef;
+//? if <1.21.9
+//import org.saturnclient.saturnclient.SaturnClient;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+//? if >=26.2 {
+/*import net.minecraft.client.gui.Hud;
+*///?} else
+import net.minecraft.client.gui.Gui;
+import net.minecraft.world.effect.MobEffect;
+import net.minecraft.world.effect.MobEffectInstance;
+import net.minecraft.core.Holder;
+import net.minecraft.resources.Identifier;
+
+@Mixin(MobEffectInstance.class)
+public abstract class StatusEffectMixin implements EffectRef {
+
+    @Shadow
+    public abstract boolean showIcon();
+
+    @Shadow
+    public abstract boolean isInfiniteDuration();
+
+    @Shadow
+    public abstract int getDuration();
+
+    @Shadow
+    public abstract Holder<MobEffect> getEffect();
+
+    // EffectRef's methods delegate to MobEffectInstance's, whose names production renames.
+    @Override
+    public boolean shouldShowIcon() {
+        return showIcon();
+    }
+
+    @Override
+    public boolean isInfinite() {
+        return isInfiniteDuration();
+    }
+
+    @Override
+    public SpriteRef getIcon() {
+        // 1.21.9 changed the GUI atlas, so newer versions draw the effect's texture (getIconId) instead.
+        //? if >=1.21.9 {
+        return null;
+        //?} else if >=1.21.6 {
+        //return (SpriteRef) SaturnClient.client.getGuiSprites().getSprite((Gui.getMobEffectSprite(getEffect())));
+        //?} else
+        //return (SpriteRef) SaturnClient.client.getMobEffectTextures().get(getEffect());
+    }
+
+    // Before 1.21.6 there's no InGameHud.getEffectTexture; getIcon's sprite is used there instead.
+    //? if >=1.21.6 {
+    @Override
+    public IdentifierRef getIconId() {
+        //? if >=26.2 {
+        /*Identifier id = Hud.getMobEffectSprite(getEffect());
+        *///?} else
+        Identifier id = Gui.getMobEffectSprite(getEffect());
+
+        return IdentifierRef.of(id.getNamespace(), "textures/" + id.getPath() + ".png");
+    }
+    //?}
+
+    @Override
+    public String getInfiniteText() {
+        return "∞";
+    }
+
+    @Override
+    public int getDurationSeconds() {
+        return getDuration() / 20; // ticks → seconds
+    }
+}

src/main/java/org/saturnclient/impl/mixins/TextMixin.java

@@ -0,0 +1,29 @@
+package org.saturnclient.impl.mixins;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.common.ref.render.TextRef;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.spongepowered.asm.mixin.Mixin;
+
+import net.minecraft.network.chat.Style;
+import net.minecraft.network.chat.Component;
+//? if >=1.21.9
+import net.minecraft.network.chat.FontDescription.Resource;
+import net.minecraft.resources.Identifier;
+
+@Mixin(Component.class)
+public interface TextMixin extends TextRef {
+
+    @Override
+    public default TextRef withFont(IdentifierRef font) {
+        //? if >=1.21.9 {
+        return (TextRef) (Component) (((Component) this).copy().setStyle(Style.EMPTY.withFont(new Resource((Identifier) (Object) font))));
+        //?} else
+        //return (TextRef) (((Component) this).copy().setStyle(Style.EMPTY.withFont((Identifier) (Object) font)));
+    }
+
+    @Override
+    public default int getWidth() {
+        return SaturnClient.client.font.width((Component) this);
+    }
+}

src/main/java/org/saturnclient/impl/mixins/WindowMixin.java

@@ -0,0 +1,44 @@
+package org.saturnclient.impl.mixins;
+
+import org.saturnclient.common.ref.render.WindowRef;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import com.mojang.blaze3d.platform.Window;
+
+@Mixin(Window.class)
+public abstract class WindowMixin implements WindowRef {
+    @Shadow
+    public abstract int getScreenWidth();
+
+    @Shadow
+    public abstract int getScreenHeight();
+
+    // The framebuffer's size
+    @Shadow
+    public abstract int getWidth();
+
+    @Shadow
+    public abstract int getHeight();
+
+    // WindowRef's methods delegate to Window's, whose names production renames.
+    @Override
+    public int getWindowWidth() {
+        return getScreenWidth();
+    }
+
+    @Override
+    public int getWindowHeight() {
+        return getScreenHeight();
+    }
+
+    @Override
+    public int getFramebufferWidth() {
+        return getWidth();
+    }
+
+    @Override
+    public int getFramebufferHeight() {
+        return getHeight();
+    }
+}

src/main/java/org/saturnclient/impl/provider/FeatureProviderFabric.java

@@ -0,0 +1,68 @@
+package org.saturnclient.impl.provider;
+
+import net.minecraft.client.Minecraft;
+
+import org.saturnclient.common.feature.*;
+import org.saturnclient.common.provider.FeatureProvider;
+import org.saturnclient.impl.features.entity.EntityFeatureImpl;
+import org.saturnclient.impl.features.network.NetworkFeatureImpl;
+import org.saturnclient.impl.features.player.PlayerFeatureImpl;
+import org.saturnclient.impl.features.render.RenderFeatureImpl;
+import org.saturnclient.impl.features.world.WorldFeatureImpl;
+
+/**
+ * Fabric implementation of {@link FeatureProvider}.
+ *
+ * Instantiated once during client startup (e.g. in the mod initialiser)
+ * and passed to every feature constructor. All five sub-modules share
+ * the same {@link MinecraftClient} reference so there is no
+ * inconsistency between modules reading state within the same tick.
+ *
+ * <pre>{@code
+ * FeatureProvider provider = new FeatureProviderFabric(MinecraftClient.getInstance());
+ * FeatureManager.register(new AutoSprintFeature(provider));
+ * FeatureManager.register(new CoordinatesFeature(provider));
+ * // …
+ * }</pre>
+ */
+public class FeatureProviderFabric implements FeatureProvider {
+
+    private final PlayerFeature player;
+    private final WorldFeature world;
+    private final EntityFeature entity;
+    private final RenderFeature render;
+    private final NetworkFeature network;
+
+    public FeatureProviderFabric(Minecraft mc) {
+        this.player = new PlayerFeatureImpl(mc);
+        this.world = new WorldFeatureImpl(mc);
+        this.entity = new EntityFeatureImpl(mc);
+        this.render = new RenderFeatureImpl(mc);
+        this.network = new NetworkFeatureImpl(mc);
+    }
+
+    @Override
+    public PlayerFeature player() {
+        return player;
+    }
+
+    @Override
+    public WorldFeature world() {
+        return world;
+    }
+
+    @Override
+    public EntityFeature entity() {
+        return entity;
+    }
+
+    @Override
+    public RenderFeature render() {
+        return render;
+    }
+
+    @Override
+    public NetworkFeature network() {
+        return network;
+    }
+}

src/main/java/org/saturnclient/impl/provider/GLFWProviderImpl.java

@@ -0,0 +1,36 @@
+package org.saturnclient.impl.provider;
+
+// 26.3 uses SDL, not GLFW; Keys converts Saturn's GLFW key codes to its own.
+//? if >=26.3 {
+/*import com.mojang.blaze3d.platform.InputConstants;
+*///?} else
+import org.lwjgl.glfw.GLFW;
+import org.saturnclient.common.provider.GLFWProvider;
+import org.saturnclient.impl.ui.Screens;
+import org.saturnclient.saturnclient.SaturnClient;
+
+public class GLFWProviderImpl implements GLFWProvider {
+    @Override
+    public boolean isKeyPressed(int key) {
+        //? if >=26.3 {
+        /*int gameKey = Keys.toGame(key);
+        return gameKey >= 0 && InputConstants.isKeyDown(gameKey) && Screens.current() == null;
+        *///?} else {
+        //? if >=1.21.9 {
+        long window = SaturnClient.client.getWindow().handle();
+        //?} else
+        //long window = SaturnClient.client.getWindow().getWindow();
+        return GLFW.glfwGetKey(window, key) == GLFW.GLFW_PRESS
+                && Screens.current() == null;
+        //?}
+    }
+
+    @Override
+    public String getKeyName(int key) {
+        //? if >=26.3 {
+        /*int gameKey = Keys.toGame(key);
+        return gameKey < 0 ? null : InputConstants.Type.KEYBOARD.getOrCreate(gameKey).getDisplayName().getString();
+        *///?} else
+        return GLFW.glfwGetKeyName(key, GLFW.glfwGetKeyScancode(key));
+    }
+}

src/main/java/org/saturnclient/impl/provider/Keys.java

@@ -0,0 +1,189 @@
+package org.saturnclient.impl.provider;
+
+//? if >=26.3 {
+/*import com.mojang.blaze3d.platform.InputConstants;
+import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
+import org.saturnclient.common.provider.GLFWProvider;
+*///?}
+
+/**
+ * Saturn's key codes are GLFW's, which the config's keybinds store. From 26.3 Minecraft uses SDL,
+ * whose keys (scancodes), modifiers and mouse buttons are numbered differently, so these convert
+ * between the two there. Before 26.3 Minecraft's numbers are GLFW's and pass through.
+ */
+public final class Keys {
+    private Keys() {
+    }
+
+    //? if >=26.3 {
+    /*private static final Int2IntOpenHashMap TO_GAME = new Int2IntOpenHashMap();
+    private static final Int2IntOpenHashMap TO_SATURN = new Int2IntOpenHashMap();
+
+    private static void key(int glfw, int game) {
+        TO_GAME.put(glfw, game);
+        TO_SATURN.put(game, glfw);
+    }
+
+    // GLFW's key codes, and the same keys' constants in 26.3
+    static {
+        TO_GAME.defaultReturnValue(-1);
+        TO_SATURN.defaultReturnValue(-1);
+        key(32, InputConstants.KEY_SPACE);
+        key(39, InputConstants.KEY_APOSTROPHE);
+        key(44, InputConstants.KEY_COMMA);
+        key(45, InputConstants.KEY_MINUS);
+        key(46, InputConstants.KEY_PERIOD);
+        key(47, InputConstants.KEY_SLASH);
+        key(48, InputConstants.KEY_0);
+        key(49, InputConstants.KEY_1);
+        key(50, InputConstants.KEY_2);
+        key(51, InputConstants.KEY_3);
+        key(52, InputConstants.KEY_4);
+        key(53, InputConstants.KEY_5);
+        key(54, InputConstants.KEY_6);
+        key(55, InputConstants.KEY_7);
+        key(56, InputConstants.KEY_8);
+        key(57, InputConstants.KEY_9);
+        key(59, InputConstants.KEY_SEMICOLON);
+        key(61, InputConstants.KEY_EQUALS);
+        key(65, InputConstants.KEY_A);
+        key(66, InputConstants.KEY_B);
+        key(67, InputConstants.KEY_C);
+        key(68, InputConstants.KEY_D);
+        key(69, InputConstants.KEY_E);
+        key(70, InputConstants.KEY_F);
+        key(71, InputConstants.KEY_G);
+        key(72, InputConstants.KEY_H);
+        key(73, InputConstants.KEY_I);
+        key(74, InputConstants.KEY_J);
+        key(75, InputConstants.KEY_K);
+        key(76, InputConstants.KEY_L);
+        key(77, InputConstants.KEY_M);
+        key(78, InputConstants.KEY_N);
+        key(79, InputConstants.KEY_O);
+        key(80, InputConstants.KEY_P);
+        key(81, InputConstants.KEY_Q);
+        key(82, InputConstants.KEY_R);
+        key(83, InputConstants.KEY_S);
+        key(84, InputConstants.KEY_T);
+        key(85, InputConstants.KEY_U);
+        key(86, InputConstants.KEY_V);
+        key(87, InputConstants.KEY_W);
+        key(88, InputConstants.KEY_X);
+        key(89, InputConstants.KEY_Y);
+        key(90, InputConstants.KEY_Z);
+        key(91, InputConstants.KEY_LBRACKET);
+        key(92, InputConstants.KEY_BACKSLASH);
+        key(93, InputConstants.KEY_RBRACKET);
+        key(96, InputConstants.KEY_GRAVE);
+        key(256, InputConstants.KEY_ESCAPE);
+        key(257, InputConstants.KEY_RETURN);
+        key(258, InputConstants.KEY_TAB);
+        key(259, InputConstants.KEY_BACKSPACE);
+        key(260, InputConstants.KEY_INSERT);
+        key(261, InputConstants.KEY_DELETE);
+        key(262, InputConstants.KEY_RIGHT);
+        key(263, InputConstants.KEY_LEFT);
+        key(264, InputConstants.KEY_DOWN);
+        key(265, InputConstants.KEY_UP);
+        key(266, InputConstants.KEY_PAGEUP);
+        key(267, InputConstants.KEY_PAGEDOWN);
+        key(268, InputConstants.KEY_HOME);
+        key(269, InputConstants.KEY_END);
+        key(280, InputConstants.KEY_CAPSLOCK);
+        key(281, InputConstants.KEY_SCROLLLOCK);
+        key(282, InputConstants.KEY_NUMLOCK);
+        key(283, InputConstants.KEY_PRINTSCREEN);
+        key(284, InputConstants.KEY_PAUSE);
+        key(290, InputConstants.KEY_F1);
+        key(291, InputConstants.KEY_F2);
+        key(292, InputConstants.KEY_F3);
+        key(293, InputConstants.KEY_F4);
+        key(294, InputConstants.KEY_F5);
+        key(295, InputConstants.KEY_F6);
+        key(296, InputConstants.KEY_F7);
+        key(297, InputConstants.KEY_F8);
+        key(298, InputConstants.KEY_F9);
+        key(299, InputConstants.KEY_F10);
+        key(300, InputConstants.KEY_F11);
+        key(301, InputConstants.KEY_F12);
+        key(302, InputConstants.KEY_F13);
+        key(303, InputConstants.KEY_F14);
+        key(304, InputConstants.KEY_F15);
+        key(305, InputConstants.KEY_F16);
+        key(306, InputConstants.KEY_F17);
+        key(307, InputConstants.KEY_F18);
+        key(308, InputConstants.KEY_F19);
+        key(309, InputConstants.KEY_F20);
+        key(310, InputConstants.KEY_F21);
+        key(311, InputConstants.KEY_F22);
+        key(312, InputConstants.KEY_F23);
+        key(313, InputConstants.KEY_F24);
+        key(320, InputConstants.KEY_NUMPAD0);
+        key(321, InputConstants.KEY_NUMPAD1);
+        key(322, InputConstants.KEY_NUMPAD2);
+        key(323, InputConstants.KEY_NUMPAD3);
+        key(324, InputConstants.KEY_NUMPAD4);
+        key(325, InputConstants.KEY_NUMPAD5);
+        key(326, InputConstants.KEY_NUMPAD6);
+        key(327, InputConstants.KEY_NUMPAD7);
+        key(328, InputConstants.KEY_NUMPAD8);
+        key(329, InputConstants.KEY_NUMPAD9);
+        key(330, InputConstants.KEY_NUMPADCOMMA);
+        key(332, InputConstants.KEY_MULTIPLY);
+        key(334, InputConstants.KEY_ADD);
+        key(335, InputConstants.KEY_NUMPADENTER);
+        key(336, InputConstants.KEY_NUMPADEQUALS);
+        key(340, InputConstants.KEY_LSHIFT);
+        key(341, InputConstants.KEY_LCONTROL);
+        key(342, InputConstants.KEY_LALT);
+        key(343, InputConstants.KEY_LGUI);
+        key(344, InputConstants.KEY_RSHIFT);
+        key(345, InputConstants.KEY_RCONTROL);
+        key(346, InputConstants.KEY_RALT);
+        key(347, InputConstants.KEY_RGUI);
+    }
+    *///?}
+
+    /** A Saturn (GLFW) key code as the game's, or -1 */
+    public static int toGame(int key) {
+        //? if >=26.3 {
+        /*return TO_GAME.get(key);
+        *///?} else
+        return key;
+    }
+
+    /** A key code from the game as Saturn's (GLFW), or -1 */
+    public static int toSaturn(int key) {
+        //? if >=26.3 {
+        /*return TO_SATURN.get(key);
+        *///?} else
+        return key;
+    }
+
+    /** The game's modifier flags as GLFW's */
+    public static int modifiersToSaturn(int modifiers) {
+        //? if >=26.3 {
+        /*int glfw = 0;
+        if ((modifiers & InputConstants.MOD_SHIFT) != 0) glfw |= GLFWProvider.GLFW_MOD_SHIFT;
+        if ((modifiers & InputConstants.MOD_CONTROL) != 0) glfw |= GLFWProvider.GLFW_MOD_CONTROL;
+        if ((modifiers & InputConstants.MOD_ALT) != 0) glfw |= GLFWProvider.GLFW_MOD_ALT;
+        if ((modifiers & InputConstants.MOD_SUPER) != 0) glfw |= GLFWProvider.GLFW_MOD_SUPER;
+        if ((modifiers & InputConstants.MOD_CAPS_LOCK) != 0) glfw |= GLFWProvider.GLFW_MOD_CAPS_LOCK;
+        if ((modifiers & InputConstants.MOD_NUM_LOCK) != 0) glfw |= GLFWProvider.GLFW_MOD_NUM_LOCK;
+        return glfw;
+        *///?} else
+        return modifiers;
+    }
+
+    /** A mouse button from the game as GLFW's (left 0, right 1, middle 2, then the side buttons) */
+    public static int mouseButtonToSaturn(int button) {
+        //? if >=26.3 {
+        /*if (button == InputConstants.MOUSE_BUTTON_LEFT) return 0;
+        if (button == InputConstants.MOUSE_BUTTON_RIGHT) return 1;
+        if (button == InputConstants.MOUSE_BUTTON_MIDDLE) return 2;
+        return button - 1;
+        *///?} else
+        return button;
+    }
+}

src/main/java/org/saturnclient/impl/provider/RefConstructorImpl.java

@@ -0,0 +1,25 @@
+package org.saturnclient.impl.provider;
+
+import org.saturnclient.common.provider.RefConstructorProvider;
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.common.ref.render.TextRef;
+
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
+
+public class RefConstructorImpl implements RefConstructorProvider {
+    @Override
+    public IdentifierRef identifier(String fullPath) {
+        return (IdentifierRef) (Object) Identifier.parse(fullPath);
+    }
+
+    @Override
+    public IdentifierRef identifier(String namespace, String path) {
+        return (IdentifierRef) (Object) Identifier.fromNamespaceAndPath(namespace, path);
+    }
+
+    @Override
+    public TextRef text(String text) {
+        return (TextRef) (Component) Component.literal(text);
+    }
+}

src/main/java/org/saturnclient/impl/provider/SaturnProviderImpl.java

@@ -0,0 +1,102 @@
+package org.saturnclient.impl.provider;
+
+import java.awt.image.BufferedImage;
+import java.util.UUID;
+import java.util.function.Supplier;
+
+import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.components.toasts.SystemToast;
+//? if >=1.21.9 {
+import net.minecraft.world.entity.player.PlayerSkin;
+//?} else
+//import net.minecraft.client.resources.PlayerSkin;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
+
+import org.saturnclient.common.provider.SaturnProvider;
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.common.ref.game.MinecraftClientRef;
+import org.saturnclient.cosmetics.Emotes;
+import org.saturnclient.impl.cosmetics.utils.IdentifierUtils;
+import org.saturnclient.saturnclient.SaturnClient;
+
+public class SaturnProviderImpl implements SaturnProvider {
+    /** Looks up the signed-in player's skin; made once, since the skin provider caches it */
+    private Supplier<Identifier> playerSkin;
+
+    @Override
+    public MinecraftClientRef getClient() {
+        return (MinecraftClientRef) SaturnClient.client;
+    }
+
+    @Override
+    public void playEmote(UUID fromPlayerUuid, String emoteIdOrNull) {
+        if (fromPlayerUuid == null) {
+            return;
+        }
+        // An empty or unknown ID stops whatever the player is playing.
+        Emotes.get(emoteIdOrNull == null ? "" : emoteIdOrNull).ifPresentOrElse(
+                emote -> org.saturnclient.emotes.fabric.Emotes.play(fromPlayerUuid, emote.animation()),
+                () -> org.saturnclient.emotes.fabric.Emotes.stop(fromPlayerUuid));
+    }
+
+    @Override
+    public void logInfo(String message) {
+        SaturnClient.LOGGER.info(message);
+    }
+
+    @Override
+    public void logError(String message) {
+        SaturnClient.LOGGER.error(message);
+    }
+
+    @Override
+    public void logError(String message, Throwable throwable) {
+        SaturnClient.LOGGER.error(message, throwable);
+    }
+
+    /** Shown longer than the vanilla default, since these ask the player to act. */
+    private static final SystemToast.SystemToastId WARNING_TOAST = new SystemToast.SystemToastId(15_000L);
+
+    @Override
+    public IdentifierRef getPlayerSkin() {
+        if (playerSkin == null) {
+            Minecraft client = Minecraft.getInstance();
+            // 1.21.9 moved SkinTextures and renamed the skin provider's lookup.
+            //? if >=1.21.9 {
+            Supplier<PlayerSkin> textures = client.getSkinManager().createLookup(client.getGameProfile(), false);
+            playerSkin = () -> textures.get().body().texturePath();
+            //?} else {
+            /*Supplier<PlayerSkin> textures = client.getSkinManager().lookupInsecure(client.getGameProfile());
+            playerSkin = () -> textures.get().texture();
+            *///?}
+        }
+
+        return (IdentifierRef) (Object) playerSkin.get();
+    }
+
+    @Override
+    public String getModVersion() {
+        return FabricLoader.getInstance().getModContainer(SaturnClient.MOD_ID)
+                .map(mod -> mod.getMetadata().getVersion().getFriendlyString())
+                .orElse("unknown");
+    }
+
+    @Override
+    public void showWarning(String title, String message) {
+        Minecraft client = Minecraft.getInstance();
+        //? if >=26.2 {
+        /*client.execute(() -> SystemToast.add(client.gui.toastManager(), WARNING_TOAST, Component.literal(title),
+                Component.literal(message)));
+        *///?} else {
+        client.execute(() -> client.getToastManager().addToast(
+                SystemToast.multiline(client, WARNING_TOAST, Component.literal(title), Component.literal(message))));
+        //?}
+    }
+
+    @Override
+    public void registerBufferedImageTexture(IdentifierRef i, BufferedImage bi) {
+        IdentifierUtils.registerBufferedImageTextureFast(i, bi);
+    }
+}

src/main/java/org/saturnclient/impl/ref/Matrix3x2fStackRef.java

@@ -0,0 +1,44 @@
+package org.saturnclient.impl.ref;
+
+import org.joml.Matrix3x2fStack;
+import org.saturnclient.common.ref.render.MatrixStackRef;
+
+public class Matrix3x2fStackRef implements MatrixStackRef {
+    public final Matrix3x2fStack stack;
+
+    public Matrix3x2fStackRef(Matrix3x2fStack stack) {
+        this.stack = stack;
+    }
+
+    @Override
+    public void push() {
+        stack.pushMatrix();
+    }
+
+    @Override
+    public void pop() {
+        stack.popMatrix();
+    }
+
+    @Override
+    public void scale(float x, float y) {
+        stack.scale(x, y);
+    }
+
+    @Override
+    public void translate(float x, float y) {
+        stack.translate(x, y);
+    }
+
+    @Override
+    public void rotate(float angle) {
+        stack.rotate((float) Math.toRadians(angle));
+    }
+
+    @Override
+    public void rotate(float angle, float originX, float originY, float originZ) {
+        translate(originX, originY);
+        rotate(angle);
+        translate(-originX, -originY);
+    }
+}

src/main/java/org/saturnclient/impl/ui/EntityDrawerImpl.java

@@ -0,0 +1,175 @@
+package org.saturnclient.impl.ui;
+
+// Entities in the UI are drawn through the GUI render state from 1.21.6, and straight into vertex
+// consumers before. This file has one implementation for each side.
+//? if >=1.21.6 {
+import org.jetbrains.annotations.Nullable;
+import org.joml.Quaternionf;
+import org.joml.Vector3f;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.saturnclient.ui.RenderScope;
+import org.saturnclient.ui.components.SkinPreview.EntityDrawer;
+
+//? if >=1.21.9 {
+import net.minecraft.client.renderer.entity.EntityRenderDispatcher;
+//?} else
+//import net.minecraft.client.renderer.entity.EntityRenderDispatcher;
+import net.minecraft.client.renderer.entity.EntityRenderer;
+import net.minecraft.client.renderer.entity.state.EntityRenderState;
+import net.minecraft.world.entity.LivingEntity;
+
+public class EntityDrawerImpl implements EntityDrawer {
+    @Override
+    public boolean render(RenderScope renderScope, int width, int height, float yaw) {
+        LivingEntity entity = SaturnClient.client.player;
+
+        if (entity == null) {
+            return false;
+        }
+
+        // The player is about 1.8 blocks tall; leave some room above and below.
+        drawEntity(renderScope, 0, 0, width, height, (int) (height / 2.2F), 0.0625F, yaw, entity);
+        return true;
+    }
+
+    // Draws the entity in the box, turned by yaw degrees (0 faces the viewer) with its head straight.
+    public static void drawEntity(RenderScope renderScope, int x1, int y1, int x2, int y2, int size, float scale,
+            float yaw, LivingEntity entity) {
+        renderScope.enableScissor(x1, y1, x2, y2);
+        Quaternionf quaternionf = (new Quaternionf()).rotateZ((float) Math.PI);
+        Quaternionf quaternionf2 = new Quaternionf();
+        float j = entity.yBodyRot;
+        float k = entity.getYRot();
+        float l = entity.getXRot();
+        float m = entity.yHeadRotO;
+        float n = entity.yHeadRot;
+        entity.yBodyRot = 180.0F + yaw;
+        entity.setYRot(180.0F + yaw);
+        entity.setXRot(0.0F);
+        entity.yHeadRot = entity.getYRot();
+        entity.yHeadRotO = entity.getYRot();
+        float o = entity.getScale();
+        Vector3f vector3f = new Vector3f(0.0F, entity.getBbHeight() / 2.0F + scale * o, 0.0F);
+        float p = (float) size / o;
+        drawEntity(renderScope, x1, y1, x2, y2, p, vector3f, quaternionf, quaternionf2, entity);
+        entity.yBodyRot = j;
+        entity.setYRot(k);
+        entity.setXRot(l);
+        entity.yHeadRotO = m;
+        entity.yHeadRot = n;
+        renderScope.disableScissor();
+    }
+
+    public static void drawEntity(RenderScope renderScope, int x1, int y1, int x2, int y2, float scale,
+            Vector3f translation, Quaternionf rotation, @Nullable Quaternionf overrideCameraAngle,
+            LivingEntity entity) {
+        //? if >=1.21.9 {
+        EntityRenderDispatcher entityRenderDispatcher = SaturnClient.client.getEntityRenderDispatcher();
+        //?} else
+        //EntityRenderDispatcher entityRenderDispatcher = SaturnClient.client.getEntityRenderDispatcher();
+        EntityRenderer<? super LivingEntity, ?> entityRenderer = entityRenderDispatcher.getRenderer(entity);
+        EntityRenderState entityRenderState = entityRenderer.createRenderState(entity, 1.0F);
+        //? if <1.21.11
+        //entityRenderState.hitboxesRenderState = null;
+
+        if (renderScope instanceof RenderScopeImpl i)
+            i.addEntity(entityRenderState, scale, translation, rotation, overrideCameraAngle, x1, y1, x2, y2);
+    }
+}
+//?} else {
+/*import org.jetbrains.annotations.Nullable;
+import org.joml.Quaternionf;
+import org.joml.Vector3f;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.saturnclient.ui.RenderScope;
+import org.saturnclient.ui.components.SkinPreview.EntityDrawer;
+
+import com.mojang.blaze3d.platform.Lighting;
+import net.minecraft.client.renderer.entity.EntityRenderDispatcher;
+import net.minecraft.world.entity.LivingEntity;
+
+public class EntityDrawerImpl implements EntityDrawer {
+    // Draws the entity in the box, turned by yaw degrees (0 faces the viewer) with its head straight.
+    public static void drawEntity(RenderScope renderScope, int x1, int y1, int x2, int y2, int size, float f,
+            float yaw, LivingEntity entity) {
+        float g = (float) (x1 + x2) / 2.0F;
+        float h = (float) (y1 + y2) / 2.0F;
+        renderScope.enableScissor(x1, y1, x2, y2);
+        Quaternionf quaternionf = (new Quaternionf()).rotateZ(3.1415927F);
+        float k = entity.yBodyRot;
+        float l = entity.getYRot();
+        float m = entity.getXRot();
+        //? if >=1.21.5
+        float n = entity.yHeadRotO;
+        //? if <1.21.5
+        //float n = entity.yHeadRotO;
+        float o = entity.yHeadRot;
+        entity.setYRot(180.0F + yaw);
+        entity.yBodyRot = 180.0F + yaw;
+        entity.setXRot(0.0F);
+        entity.yHeadRot = entity.getYRot();
+        //? if >=1.21.5
+        entity.yHeadRotO = entity.getYHeadRot();
+        //? if <1.21.5
+        //entity.yHeadRotO = entity.getYHeadRot();
+        entity.setCustomNameVisible(false);
+
+        float p = entity.getScale();
+        Vector3f vector3f = new Vector3f(0.0F, entity.getBbHeight() / 2.0F + f * p, 0.0F);
+        float q = (float) size / p;
+        drawEntity(renderScope, g, h, q, vector3f, quaternionf, null, entity);
+
+        entity.setCustomNameVisible(true);
+        entity.yBodyRot = k;
+        entity.setYRot(l);
+        entity.setXRot(m);
+        //? if >=1.21.5
+        entity.yHeadRotO = n;
+        //? if <1.21.5
+        //entity.yHeadRotO = n;
+        entity.yHeadRot = o;
+        renderScope.disableScissor();
+    }
+
+    public static void drawEntity(RenderScope renderScope, float x, float y, float size, Vector3f vector3f,
+            Quaternionf quaternionf, @Nullable Quaternionf quaternionf2, LivingEntity entity) {
+        if (renderScope instanceof RenderScopeImpl scopeImpl) {
+            scopeImpl.matrices.pushPose();
+            scopeImpl.matrices.translate((double) x, (double) y, 0);
+            scopeImpl.matrices.scale(size, size, -size);
+            scopeImpl.matrices.translate(vector3f.x, vector3f.y, vector3f.z);
+            scopeImpl.matrices.mulPose(quaternionf);
+            scopeImpl.draw();
+            //? if >=1.21.5
+            Lighting.setupForFlatItems();
+            //? if <1.21.5
+            //Lighting.setupForEntityInInventory();
+            EntityRenderDispatcher entityRenderDispatcher = SaturnClient.client.getEntityRenderDispatcher();
+
+            entityRenderDispatcher.setRenderShadow(false);
+            scopeImpl.draw((vertexConsumers) -> {
+                entityRenderDispatcher.render(entity, 0.0, 0.0, 0.0, 1.0F,
+                        scopeImpl.matrices, vertexConsumers, 15728880);
+            });
+
+            scopeImpl.draw();
+            entityRenderDispatcher.setRenderShadow(true);
+            scopeImpl.getMatrixStack().pop();
+            Lighting.setupFor3DItems();
+        }
+
+    }
+
+    @Override
+    public boolean render(RenderScope renderScope, int width, int height, float yaw) {
+        LivingEntity entity = SaturnClient.client.player;
+        if (entity == null) {
+            return false;
+        }
+
+        // The player is about 1.8 blocks tall; leave some room above and below.
+        drawEntity(renderScope, 0, 0, width, height, (int) (height / 2.2F), 0.0625F, yaw, entity);
+        return true;
+    }
+}
+*///?}

src/main/java/org/saturnclient/impl/ui/GlassRenderer.java

@@ -0,0 +1,459 @@
+package org.saturnclient.impl.ui;
+
+// Glass: a copy of the game behind the screen, blurred, drawn through each panel's rounded rectangle
+// texture as a mask. There's a copy for each blur strength in use (menus and widgets have their own),
+// blurred with vanilla's blur at that radius, so it holds the world or panorama without the screen's
+// own animated background blur.
+//
+// The GUI rewrites split this into three implementations:
+// - 1.21.6+: the GUI is drawn after the screen builds it, so the copy is taken from the main
+//   framebuffer while the screen builds its GUI, and glass is a GUI element with its own pipeline
+//   (shaders/core/glass.fsh). The blur is vanilla's effect rebuilt with the radius set.
+// - 1.21.5: the screen draws straight into the framebuffer, blurring it first, so the game is saved
+//   before the blur (saveBackground). Glass is a render layer with its own pipeline
+//   (shaders/core/glass_pre_1_21_6.fsh), and the blur takes the radius as it runs.
+// - 1.21.4: as 1.21.5, with GL framebuffers copied by blitting, and a shader program
+//   (shaders/core/glass.json) instead of a pipeline.
+//? if >=1.21.6 {
+import java.io.Reader;
+import java.util.HashMap;
+//? if >=26.1
+//import java.util.LinkedHashSet;
+import java.util.Map;
+//? if >=26.1
+//import java.util.Set;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.mojang.blaze3d.pipeline.RenderPipeline;
+import com.mojang.blaze3d.systems.RenderSystem;
+import com.mojang.blaze3d.textures.FilterMode;
+import com.mojang.blaze3d.textures.GpuTextureView;
+import com.mojang.serialization.JsonOps;
+
+import org.saturnclient.config.Config;
+import org.saturnclient.saturnclient.SaturnClient;
+
+import com.mojang.blaze3d.pipeline.RenderTarget;
+import net.minecraft.client.renderer.PostChainConfig;
+import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.RenderPipelines;
+import com.mojang.blaze3d.pipeline.TextureTarget;
+import net.minecraft.client.renderer.LevelTargetBundle;
+//? if >=26.2 {
+/*import com.mojang.blaze3d.GpuFormat;
+import net.minecraft.client.renderer.BindGroupLayouts;
+*///?}
+//? if >=26.1 {
+/*import net.minecraft.client.renderer.Projection;
+import net.minecraft.client.renderer.ProjectionMatrixBuffer;
+*///?} else
+import net.minecraft.client.renderer.CachedOrthoProjectionMatrixBuffer;
+import net.minecraft.client.renderer.texture.AbstractTexture;
+import net.minecraft.client.gui.render.TextureSetup;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
+import net.minecraft.resources.Identifier;
+
+public final class GlassRenderer {
+    public static final RenderPipeline PIPELINE = RenderPipeline.builder(RenderPipelines.GUI_TEXTURED_SNIPPET)
+            .withLocation(Identifier.fromNamespaceAndPath("saturnclient", "pipeline/glass"))
+            .withFragmentShader(Identifier.fromNamespaceAndPath("saturnclient", "core/glass"))
+            //? if >=26.2 {
+            /*.withBindGroupLayout(BindGroupLayouts.SAMPLER1)
+            *///?} else
+            .withSampler("Sampler1")
+            // The transforms block ends with LineWidth before 1.21.11 (see glass.fsh).
+            //? if <1.21.11
+            //.withShaderDefine("HAS_LINE_WIDTH")
+            // 26.3 compiles through SPIR-V and moved TextureMat up the transforms block.
+            //? if >=26.3
+            //.withShaderDefine("EXPLICIT_LOCATIONS").withShaderDefine("TEXTURE_MAT_SECOND")
+            .build();
+
+    private static final Identifier BLUR = Identifier.withDefaultNamespace("post_effect/blur.json");
+    //? if >=26.1 {
+    /*private static final Projection PROJECTION = new Projection();
+    private static final ProjectionMatrixBuffer PROJECTION_BUFFER = new ProjectionMatrixBuffer("saturn glass");
+
+    static {
+        // As vanilla sets up its post chains' projection; the chain sizes it when it runs.
+        PROJECTION.setupOrtho(0.1f, 1000f, 1f, 1f, false);
+    }
+    *///?} else
+    private static final CachedOrthoProjectionMatrixBuffer PROJECTION = new CachedOrthoProjectionMatrixBuffer("saturn glass", 0.1f, 1000f, false);
+    // For the blurs' intermediate targets, freed once unused for a few frames
+    private static final CrossFrameResourcePool POOL = new CrossFrameResourcePool(3);
+
+    // By blur strength. A blur that failed to load is kept as null, so it isn't retried every frame.
+    private static final Map<Integer, PostChain> BLURS = new HashMap<>();
+    private static final Map<Integer, TextureTarget> BACKDROPS = new HashMap<>();
+
+    private GlassRenderer() {
+    }
+
+    // From 26.1 the GUI is built before the frame's world is drawn, so the main framebuffer still
+    // holds the last frame, glass included. The copies wait until the GUI renderer is about to draw
+    // (GuiRendererMixin), when it holds this frame's world and panorama.
+    //? if >=26.1 {
+    /*private static final Set<Integer> PENDING = new LinkedHashSet<>();
+    *///?}
+
+    private static RenderTarget mainTarget() {
+        //? if >=26.2 {
+        /*return SaturnClient.client.gameRenderer.mainRenderTarget();
+        *///?} else
+        return SaturnClient.client.getMainRenderTarget();
+    }
+
+    // Copies the main framebuffer and blurs the copy by blur. Call once a frame for each blur, while
+    // the screen builds its GUI, before drawing glass with it.
+    public static void captureBackdrop(int blur) {
+        RenderTarget main = mainTarget();
+        int width = main.width;
+        int height = main.height;
+
+        TextureTarget backdrop = BACKDROPS.get(blur);
+        if (backdrop == null) {
+            // From 26.3 the depth format picks the depth buffer (none here); 26.2 takes a flag.
+            //? if >=26.3 {
+            /*backdrop = new TextureTarget("Saturn glass " + blur, width, height, GpuFormat.RGBA8_UNORM, null);
+            *///?} else if >=26.2 {
+            /*backdrop = new TextureTarget("Saturn glass " + blur, width, height, false, GpuFormat.RGBA8_UNORM);
+            *///?} else
+            backdrop = new TextureTarget("Saturn glass " + blur, width, height, false);
+            BACKDROPS.put(blur, backdrop);
+        } else if (backdrop.width != width || backdrop.height != height) {
+            backdrop.resize(width, height);
+        }
+        //? if <1.21.11
+        //backdrop.getColorTexture().setTextureFilter(FilterMode.LINEAR, false);
+
+        //? if >=26.1 {
+        /*PENDING.add(blur);
+    }
+
+    // Copies and blurs the backdrops the GUI asked for this frame. GuiRendererMixin calls it once the
+    // world and the panorama are drawn, before the GUI.
+    public static void blurPendingBackdrops() {
+        RenderTarget main = mainTarget();
+        for (int blur : PENDING) {
+            TextureTarget backdrop = BACKDROPS.get(blur);
+            // The GUI already refers to the backdrop's texture, so after a resize it keeps the last
+            // frame's until the next one.
+            if (backdrop != null && backdrop.width == main.width && backdrop.height == main.height) {
+                blurBackdrop(main, backdrop, blur);
+            }
+        }
+        PENDING.clear();
+    }
+
+    private static void blurBackdrop(RenderTarget main, TextureTarget backdrop, int blur) {
+        int width = main.width;
+        int height = main.height;
+        *///?}
+        RenderSystem.getDevice().createCommandEncoder().copyTextureToTexture(
+                main.getColorTexture(), backdrop.getColorTexture(), 0, 0, 0, 0, 0, width, height);
+
+        PostChain processor = getBlur(blur);
+        if (processor != null) {
+            processor.process(backdrop, POOL);
+        }
+        POOL.endFrame();
+        release(blur);
+    }
+
+    // The mask, then the copy blurred by blur, as the glass pipeline samples them
+    public static TextureSetup textures(AbstractTexture mask, int blur) {
+        GpuTextureView backdrop = BACKDROPS.get(blur).getColorTextureView();
+        //? if >=1.21.11
+        return TextureSetup.doubleTexture(mask.getTextureView(), mask.getSampler(), backdrop, RenderSystem.getSamplerCache().getClampToEdge(FilterMode.LINEAR));
+        //? if <1.21.11
+        //return TextureSetup.doubleTexture(mask.getTextureView(), backdrop);
+    }
+
+    // Frees the copies and blurs of strengths that are no longer set, besides kept
+    private static void release(int kept) {
+        BACKDROPS.entrySet().removeIf(entry -> {
+            boolean unused = entry.getKey() != kept && !isSet(entry.getKey());
+            // The GUI already refers to this frame's pending backdrops.
+            //? if >=26.1
+            //unused &= !PENDING.contains(entry.getKey());
+            if (unused) {
+                entry.getValue().destroyBuffers();
+            }
+            return unused;
+        });
+        BLURS.entrySet().removeIf(entry -> {
+            boolean unused = entry.getKey() != kept && !isSet(entry.getKey());
+            // The GUI already refers to this frame's pending backdrops.
+            //? if >=26.1
+            //unused &= !PENDING.contains(entry.getKey());
+            if (unused && entry.getValue() != null) {
+                entry.getValue().close();
+            }
+            return unused;
+        });
+    }
+
+    private static boolean isSet(int blur) {
+        return blur == Config.menuBlur.value || blur == Config.widgetBlur.value;
+    }
+
+    private static PostChain getBlur(int blur) {
+        if (!BLURS.containsKey(blur)) {
+            BLURS.put(blur, loadBlur(blur));
+        }
+        return BLURS.get(blur);
+    }
+
+    // Vanilla's blur, with its radius set to blur. Vanilla's own leaves it at 0, which makes the shader
+    // read the menu blur setting (Saturn's animated background blur while a Saturn screen is open).
+    private static PostChain loadBlur(int blur) {
+        try (Reader reader = SaturnClient.client.getResourceManager().getResourceOrThrow(BLUR).openAsReader()) {
+            JsonElement json = JsonParser.parseReader(reader);
+            setRadius(json, blur);
+
+            PostChainConfig pipeline = PostChainConfig.CODEC.parse(JsonOps.INSTANCE, json).getOrThrow();
+            return PostChain.load(pipeline, SaturnClient.client.getTextureManager(),
+                    //? if >=26.1 {
+                    /*LevelTargetBundle.MAIN_TARGETS, Identifier.fromNamespaceAndPath("saturnclient", "glass_blur_" + blur), PROJECTION, PROJECTION_BUFFER);
+                    *///?} else
+                    LevelTargetBundle.MAIN_TARGETS, Identifier.fromNamespaceAndPath("saturnclient", "glass_blur_" + blur), PROJECTION);
+        } catch (Exception e) {
+            SaturnClient.LOGGER.error("Couldn't load the glass blur", e);
+            return null;
+        }
+    }
+
+    // Sets every "Radius" uniform in the effect
+    private static void setRadius(JsonElement json, int radius) {
+        if (json.isJsonArray()) {
+            json.getAsJsonArray().forEach(element -> setRadius(element, radius));
+        } else if (json.isJsonObject()) {
+            JsonObject object = json.getAsJsonObject();
+            if (object.has("name") && object.get("name").getAsString().equals("Radius")) {
+                object.addProperty("value", (float) radius);
+            }
+            object.entrySet().forEach(entry -> setRadius(entry.getValue(), radius));
+        }
+    }
+}
+//?} else if >=1.21.5 {
+/*import java.util.HashMap;
+import java.util.Map;
+
+import com.mojang.blaze3d.pipeline.RenderPipeline;
+import com.mojang.blaze3d.systems.RenderSystem;
+import com.mojang.blaze3d.textures.FilterMode;
+
+import org.saturnclient.config.Config;
+import org.saturnclient.saturnclient.SaturnClient;
+
+import com.mojang.blaze3d.pipeline.RenderTarget;
+import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.RenderPipelines;
+import com.mojang.blaze3d.pipeline.TextureTarget;
+import net.minecraft.client.renderer.LevelTargetBundle;
+import net.minecraft.client.renderer.RenderType;
+import net.minecraft.client.renderer.RenderStateShard;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
+import net.minecraft.resources.Identifier;
+
+public final class GlassRenderer {
+    private static final RenderPipeline PIPELINE = RenderPipeline.builder(RenderPipelines.GUI_TEXTURED_SNIPPET)
+            .withLocation(Identifier.fromNamespaceAndPath("saturnclient", "pipeline/glass"))
+            .withFragmentShader(Identifier.fromNamespaceAndPath("saturnclient", "core/glass_pre_1_21_6"))
+            .withSampler("Sampler1")
+            .build();
+
+    private static final Identifier BLUR = Identifier.withDefaultNamespace("blur");
+    // For the blur's intermediate target, freed once unused for a few frames
+    private static final CrossFrameResourcePool POOL = new CrossFrameResourcePool(3);
+
+    private static final Map<Integer, TextureTarget> BACKDROPS = new HashMap<>();
+    // By mask and blur
+    private static final Map<String, RenderType> LAYERS = new HashMap<>();
+    // The game behind the screen before the screen blurs it, which glass is blurred from
+    private static TextureTarget background;
+
+    private GlassRenderer() {
+    }
+
+    // Saves the main framebuffer for glass. Call each frame before the screen blurs its background.
+    public static void saveBackground() {
+        background = copy(SaturnClient.client.getMainRenderTarget(), background, "Saturn glass background");
+    }
+
+    // Copies the saved background and blurs the copy by blur. Call once a frame for each blur, before
+    // drawing glass with it.
+    public static void captureBackdrop(int blur) {
+        RenderTarget from = background != null ? background : SaturnClient.client.getMainRenderTarget();
+        TextureTarget backdrop = copy(from, BACKDROPS.get(blur), "Saturn glass " + blur);
+        BACKDROPS.put(blur, backdrop);
+
+        PostChain processor = SaturnClient.client.getShaderManager().getPostChain(BLUR,
+                LevelTargetBundle.MAIN_TARGETS);
+        if (processor != null) {
+            processor.process(backdrop, POOL, pass -> pass.setUniform("Radius", (float) blur));
+        }
+        POOL.endFrame();
+        release(blur);
+    }
+
+    // Draws glass through mask with the copy blurred by blur
+    public static RenderType getLayer(Identifier mask, int blur) {
+        return LAYERS.computeIfAbsent(mask + " " + blur, key -> RenderType.create("saturn_glass", 786432, PIPELINE,
+                RenderType.CompositeState.builder()
+                        .setTextureState(new RenderStateShard.EmptyTextureStateShard(() -> {
+                            RenderSystem.setShaderTexture(0,
+                                    SaturnClient.client.getTextureManager().getTexture(mask).getTexture());
+                            RenderSystem.setShaderTexture(1, BACKDROPS.get(blur).getColorTexture());
+                        }, () -> {
+                        }))
+                        .createCompositeState(false)));
+    }
+
+    // Frees the copies of strengths that are no longer set, besides kept
+    private static void release(int kept) {
+        BACKDROPS.entrySet().removeIf(entry -> {
+            boolean unused = entry.getKey() != kept && entry.getKey() != Config.menuBlur.value
+                    && entry.getKey() != Config.widgetBlur.value;
+            if (unused) {
+                entry.getValue().destroyBuffers();
+            }
+            return unused;
+        });
+    }
+
+    // Copies from into to, made or resized to match
+    private static TextureTarget copy(RenderTarget from, TextureTarget to, String name) {
+        int width = from.width;
+        int height = from.height;
+
+        if (to == null) {
+            to = new TextureTarget(name, width, height, false);
+        } else if (to.width != width || to.height != height) {
+            to.resize(width, height);
+        }
+        to.getColorTexture().setTextureFilter(FilterMode.LINEAR, false);
+
+        RenderSystem.getDevice().createCommandEncoder().copyTextureToTexture(
+                from.getColorTexture(), to.getColorTexture(), 0, 0, 0, 0, 0, width, height);
+        return to;
+    }
+}
+*///?} else {
+/*import java.util.HashMap;
+import java.util.Map;
+
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL30;
+
+import com.mojang.blaze3d.platform.GlStateManager;
+import com.mojang.blaze3d.systems.RenderSystem;
+
+import org.saturnclient.config.Config;
+import org.saturnclient.saturnclient.SaturnClient;
+
+import net.minecraft.client.renderer.ShaderDefines;
+import com.mojang.blaze3d.pipeline.RenderTarget;
+import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.ShaderProgram;
+import com.mojang.blaze3d.pipeline.TextureTarget;
+import net.minecraft.client.renderer.LevelTargetBundle;
+import net.minecraft.client.renderer.RenderType;
+import net.minecraft.client.renderer.RenderStateShard;
+import com.mojang.blaze3d.vertex.VertexFormat;
+import com.mojang.blaze3d.vertex.DefaultVertexFormat;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
+import net.minecraft.resources.Identifier;
+
+public final class GlassRenderer {
+    private static final ShaderProgram PROGRAM = new ShaderProgram(Identifier.fromNamespaceAndPath("saturnclient", "core/glass"),
+            DefaultVertexFormat.POSITION_TEX_COLOR, ShaderDefines.EMPTY);
+
+    private static final Identifier BLUR = Identifier.withDefaultNamespace("blur");
+    // For the blur's intermediate target, freed once unused for a few frames
+    private static final CrossFrameResourcePool POOL = new CrossFrameResourcePool(3);
+
+    private static final Map<Integer, TextureTarget> BACKDROPS = new HashMap<>();
+    // By mask and blur
+    private static final Map<String, RenderType> LAYERS = new HashMap<>();
+    // The game behind the screen before the screen blurs it, which glass is blurred from
+    private static TextureTarget background;
+
+    private GlassRenderer() {
+    }
+
+    // Saves the main framebuffer for glass. Call each frame before the screen blurs its background.
+    public static void saveBackground() {
+        background = copy(SaturnClient.client.getMainRenderTarget(), background);
+    }
+
+    // Copies the saved background and blurs the copy by blur. Call once a frame for each blur, before
+    // drawing glass with it.
+    public static void captureBackdrop(int blur) {
+        RenderTarget from = background != null ? background : SaturnClient.client.getMainRenderTarget();
+        TextureTarget backdrop = copy(from, BACKDROPS.get(blur));
+        BACKDROPS.put(blur, backdrop);
+
+        PostChain processor = SaturnClient.client.getShaderManager().getPostChain(BLUR,
+                LevelTargetBundle.MAIN_TARGETS);
+        if (processor != null) {
+            processor.setUniform("Radius", blur);
+            processor.process(backdrop, POOL);
+        }
+        POOL.endFrame();
+        release(blur);
+        SaturnClient.client.getMainRenderTarget().bindWrite(false);
+    }
+
+    // Draws glass through mask with the copy blurred by blur
+    public static RenderType getLayer(Identifier mask, int blur) {
+        return LAYERS.computeIfAbsent(mask + " " + blur, key -> RenderType.create("saturn_glass",
+                DefaultVertexFormat.POSITION_TEX_COLOR, VertexFormat.Mode.QUADS, 786432,
+                RenderType.CompositeState.builder()
+                        .setTextureState(new RenderStateShard.EmptyTextureStateShard(() -> {
+                            RenderSystem.setShaderTexture(0, mask);
+                            RenderSystem.setShaderTexture(1, BACKDROPS.get(blur).getColorTextureId());
+                        }, () -> {
+                        }))
+                        .setShaderState(new RenderStateShard.ShaderStateShard(PROGRAM))
+                        .setTransparencyState(RenderStateShard.TRANSLUCENT_TRANSPARENCY)
+                        .createCompositeState(false)));
+    }
+
+    // Frees the copies of strengths that are no longer set, besides kept
+    private static void release(int kept) {
+        BACKDROPS.entrySet().removeIf(entry -> {
+            boolean unused = entry.getKey() != kept && entry.getKey() != Config.menuBlur.value
+                    && entry.getKey() != Config.widgetBlur.value;
+            if (unused) {
+                entry.getValue().destroyBuffers();
+            }
+            return unused;
+        });
+    }
+
+    // Copies from into to, made or resized to match
+    private static TextureTarget copy(RenderTarget from, TextureTarget to) {
+        int width = from.width;
+        int height = from.height;
+
+        if (to == null) {
+            to = new TextureTarget(width, height, false);
+        } else if (to.width != width || to.height != height) {
+            to.resize(width, height);
+        }
+        to.setFilterMode(GL11.GL_LINEAR);
+
+        GlStateManager._glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, from.frameBufferId);
+        GlStateManager._glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, to.frameBufferId);
+        GlStateManager._glBlitFrameBuffer(0, 0, width, height, 0, 0, width, height, GL11.GL_COLOR_BUFFER_BIT,
+                GL11.GL_NEAREST);
+        SaturnClient.client.getMainRenderTarget().bindWrite(false);
+        return to;
+    }
+}
+*///?}

src/main/java/org/saturnclient/impl/ui/RenderScopeImpl.java

@@ -0,0 +1,842 @@
+package org.saturnclient.impl.ui;
+
+// 1.21.6 rewrote GUI rendering: render states and a 2D matrix stack (Matrix3x2fStack) instead of
+// drawing into vertex consumers with a MatrixStack. This file has one implementation for each side.
+//? if >=1.21.6 {
+import java.util.ArrayDeque;
+import java.util.Deque;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+import org.jetbrains.annotations.Nullable;
+import org.joml.Matrix3x2f;
+import org.joml.Matrix3x2fStack;
+import org.joml.Quaternionf;
+import org.joml.Vector3f;
+
+import com.mojang.blaze3d.textures.GpuTextureView;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.common.ref.asset.SpriteRef;
+import org.saturnclient.common.ref.game.ItemStackRef;
+import org.saturnclient.common.ref.render.MatrixStackRef;
+import org.saturnclient.impl.ref.Matrix3x2fStackRef;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.saturnclient.saturnclient.mixin.DrawContextAccessor;
+import org.saturnclient.ui.RenderScope;
+import org.saturnclient.ui.resources.Fonts;
+import org.saturnclient.ui.resources.SvgTexture;
+
+import net.minecraft.client.renderer.RenderPipelines;
+import net.minecraft.client.gui.GuiGraphics;
+import net.minecraft.client.gui.navigation.ScreenRectangle;
+import net.minecraft.client.gui.render.state.ColoredRectangleRenderState;
+import net.minecraft.client.gui.render.state.GuiRenderState;
+import net.minecraft.client.gui.render.state.GuiItemRenderState;
+import net.minecraft.client.gui.render.state.GuiTextRenderState;
+import net.minecraft.client.gui.render.state.BlitRenderState;
+import net.minecraft.client.gui.render.state.pip.GuiEntityRenderState;
+import net.minecraft.client.renderer.entity.state.EntityRenderState;
+//? if >=1.21.7 {
+import net.minecraft.client.renderer.item.TrackingItemStackRenderState;
+//?} else
+//import net.minecraft.client.renderer.item.ItemStackRenderState;
+import net.minecraft.client.renderer.texture.AbstractTexture;
+import net.minecraft.client.renderer.texture.TextureAtlasSprite;
+import net.minecraft.client.gui.render.TextureSetup;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.item.ItemDisplayContext;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
+import net.minecraft.ReportedException;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportCategory;
+import net.minecraft.world.level.Level;
+
+public class RenderScopeImpl implements RenderScope {
+
+    public final Matrix3x2fStackRef matrices;
+    public final GuiRenderState state;
+
+    private ScissorStack scissorStack;
+    private int opacity = 0xFF << 24;
+    // The glass blurs made for this scope's frame
+    private final Set<Integer> capturedBlurs = new HashSet<>();
+
+    public RenderScopeImpl(GuiGraphics context) {
+        this(context.pose(), ((DrawContextAccessor) (Object) context).getState());
+    }
+
+    public RenderScopeImpl(Matrix3x2fStack matrices, GuiRenderState state) {
+        this.matrices = new Matrix3x2fStackRef(matrices);
+        this.state = state;
+        this.scissorStack = new ScissorStack();
+    }
+
+    @Override
+    public MatrixStackRef getMatrixStack() {
+        return matrices;
+    }
+
+    @Override
+    public void setOpacity(float alpha) {
+        this.opacity = ((int) (alpha * 255)) << 24;
+    }
+
+    @Override
+    public int getColor(int color) {
+        int originalAlpha = (color >>> 24) & 0xFF;
+        int newAlpha = (opacity >>> 24) & 0xFF;
+        int mixedAlpha = (originalAlpha * newAlpha) / 255;
+        return (mixedAlpha << 24) | (color & 0x00FFFFFF);
+    }
+
+    @Override
+    public void fill(int x1, int y1, int x2, int y2, int color) {
+        this.state.submitGuiElement(
+                new ColoredRectangleRenderState(
+                        RenderPipelines.GUI,
+                        TextureSetup.noTexture(),
+                        new Matrix3x2f(this.matrices.stack),
+                        x1, y1, x2, y2, color, color,
+                        this.scissorStack.peekLast()));
+    }
+
+    @Override
+    public void drawRectangle(int x, int y, int width, int height, int color) {
+        if (color == 0)
+            return;
+        color = getColor(color);
+
+        int x1 = x;
+        int x2 = x + width;
+        int y1 = y;
+        int y2 = y + height;
+
+        if (x2 < x1) {
+            int tmp = x1;
+            x1 = x2;
+            x2 = tmp;
+        }
+        if (y2 < y1) {
+            int tmp = y1;
+            y1 = y2;
+            y2 = tmp;
+        }
+
+        this.fill(x1, y1, x2, y2, color);
+    }
+
+    @Override
+    public void drawText(String text, int x, int y, int font, int color) {
+        drawText(1.0f, text, x, y, font, color);
+    }
+
+    @Override
+    public void drawText(float scale, String text, int x, int y, int font, int color) {
+        if (color == 0)
+            return;
+        if (font == 0)
+            scale *= 2;
+
+        int lineIndex = 0;
+        for (String line : text.split("\n")) {
+            int finalColor = getColor(color);
+
+            matrices.push();
+            matrices.translate(x, y + (lineIndex * Fonts.getHeight()));
+            matrices.scale(scale, scale);
+
+            this.state.submitText(
+                    new GuiTextRenderState(
+                            SaturnClient.client.font,
+                            ((Component) Fonts.setFont(line, font)).getVisualOrderText(),
+                            new Matrix3x2f(this.matrices.stack),
+                            0, font == 0 ? 1 : 8,
+                            //? if >=1.21.11 {
+                            finalColor, 0, false, false, this.scissorStack.peekLast()));
+                            //?} else
+                            //finalColor, 0, false, this.scissorStack.peekLast()));
+
+            matrices.pop();
+
+            lineIndex++;
+        }
+    }
+
+    @Override
+    public int getScaledWindowWidth() {
+        return SaturnClient.client.getWindow().getGuiScaledWidth();
+    }
+
+    @Override
+    public int getScaledWindowHeight() {
+        return SaturnClient.client.getWindow().getGuiScaledHeight();
+    }
+
+    // Texture rendering
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height) {
+        drawTexture(sprite, x, y, u, v, width, height, -1);
+    }
+
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height, int color) {
+        drawTexture(sprite, x, y, u, v, width, height, width, height, width, height, color);
+    }
+
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height,
+            int regionWidth, int regionHeight, int textureWidth, int textureHeight) {
+        drawTexture(sprite, x, y, u, v, width, height, regionWidth, regionHeight, textureWidth, textureHeight, -1);
+    }
+
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height,
+            int regionWidth, int regionHeight, int textureWidth, int textureHeight, int color) {
+        drawTexturedQuad((Identifier) (Object) sprite, x, x + width, y, y + height,
+                (u + 0f) / textureWidth,
+                (u + regionWidth) / textureWidth,
+                (v + 0f) / textureHeight,
+                (v + regionHeight) / textureHeight,
+                color);
+    }
+
+    private void drawTexturedQuad(Identifier sprite, int x1, int x2, int y1, int y2,
+            float u1, float u2, float v1, float v2, int color) {
+        if (color == 0)
+            return;
+        color = getColor(color);
+
+        if (sprite.getPath().endsWith(".svg")) {
+            sprite = (Identifier) (Object) SvgTexture.getSvg(
+                    (IdentifierRef) (Object) sprite,
+                    (x2 - x1) * 2, (y2 - y1) * 2);
+        }
+
+        GpuTextureView gpuTextureView = SaturnClient.client.getTextureManager()
+                .getTexture(sprite).getTextureView();
+
+        //? if >=1.21.11
+        AbstractTexture abstractTexture = SaturnClient.client.getTextureManager().getTexture(sprite);
+
+        this.state.submitGuiElement(new BlitRenderState(
+                RenderPipelines.GUI_TEXTURED,
+                //? if >=1.21.11 {
+                TextureSetup.singleTexture(gpuTextureView, abstractTexture.getSampler()),
+                //?} else
+                //TextureSetup.singleTexture(gpuTextureView),
+                new Matrix3x2f(this.matrices.stack),
+                x1, y1, x2, y2, u1, u2, v1, v2, color,
+                this.scissorStack.peekLast()));
+    }
+
+    @Override
+    public void drawGlass(IdentifierRef mask, int x, int y, int width, int height, int blur) {
+        int color = getColor(0xFFFFFFFF);
+        if (mask == null || color >>> 24 == 0)
+            return;
+
+        if (capturedBlurs.add(blur)) {
+            GlassRenderer.captureBackdrop(blur);
+        }
+
+        AbstractTexture maskTexture = SaturnClient.client.getTextureManager().getTexture((Identifier) (Object) mask);
+        this.state.submitGuiElement(new BlitRenderState(
+                GlassRenderer.PIPELINE,
+                GlassRenderer.textures(maskTexture, blur),
+                new Matrix3x2f(this.matrices.stack),
+                x, y, x + width, y + height, 0, 1, 0, 1, color,
+                this.scissorStack.peekLast()));
+    }
+
+    // Scissor management
+    @Override
+    public void enableScissor(int x1, int y1, int x2, int y2) {
+        ScreenRectangle rect = new ScreenRectangle(x1, y1, x2 - x1, y2 - y1).transformAxisAligned(this.matrices.stack);
+        scissorStack.push(rect);
+    }
+
+    @Override
+    public void disableScissor() {
+        scissorStack.pop();
+    }
+
+    @Override
+    public boolean scissorContains(int x, int y) {
+        return scissorStack.contains(x, y);
+    }
+
+    public static class ScissorStack {
+        private final Deque<ScreenRectangle> stack = new ArrayDeque<>();
+
+        public ScreenRectangle push(ScreenRectangle rect) {
+            ScreenRectangle last = stack.peekLast();
+            if (last != null) {
+                ScreenRectangle intersection = Objects.requireNonNullElse(rect.intersection(last), ScreenRectangle.empty());
+                stack.addLast(intersection);
+                return intersection;
+            } else {
+                stack.addLast(rect);
+                return rect;
+            }
+        }
+
+        @Nullable
+        public ScreenRectangle pop() {
+            if (stack.isEmpty())
+                throw new IllegalStateException("Scissor stack underflow");
+            stack.removeLast();
+            return stack.peekLast();
+        }
+
+        @Nullable
+        public ScreenRectangle peekLast() {
+            return stack.peekLast();
+        }
+
+        public boolean contains(int x, int y) {
+            return stack.isEmpty() || stack.peekLast().containsPoint(x, y);
+        }
+    }
+
+    // Item rendering
+    @Override
+    public void drawItem(ItemStackRef stack, int x, int y) {
+        drawItem(null, SaturnClient.client.level, stack, x, y, 0);
+    }
+
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStackRef stack, int x, int y,
+            int seed) {
+        drawItem(entity, world, (ItemStack) (Object) stack, x, y, seed, 0);
+    }
+
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStack stack, int x, int y, int seed,
+            int z) {
+        if (!stack.isEmpty()) {
+            //? if >=1.21.7 {
+            TrackingItemStackRenderState keyedItemRenderState = new TrackingItemStackRenderState();
+            //?} else
+            //ItemStackRenderState keyedItemRenderState = new ItemStackRenderState();
+            SaturnClient.client.getItemModelResolver().updateForTopItem(keyedItemRenderState, stack,
+                    ItemDisplayContext.GUI, world,
+                    entity, seed);
+
+            try {
+                //? if >=26.1 {
+                /*this.state.submitItem(new GuiItemRenderState(
+                *///?} else
+                this.state.submitItem(new GuiItemRenderState(stack.getItem().getName().toString(),
+                        new Matrix3x2f(this.matrices.stack), keyedItemRenderState, x, y,
+                        this.scissorStack.peekLast()));
+            } catch (Throwable throwable) {
+                CrashReport crashReport = CrashReport.forThrowable(throwable, "Rendering item");
+                CrashReportCategory crashReportSection = crashReport.addCategory("Item being rendered");
+                crashReportSection.setDetail("Item Type", () -> String.valueOf(stack.getItem()));
+                crashReportSection.setDetail("Item Components", () -> String.valueOf(stack.getComponents()));
+                crashReportSection.setDetail("Item Foil", () -> String.valueOf(stack.hasFoil()));
+                throw new ReportedException(crashReport);
+            }
+        }
+    }
+
+    @Override
+    public void drawSpriteStretched(SpriteRef sprite, int x, int y, int width, int height) {
+        drawSpriteStretched(sprite, x, y, width, height, -1);
+    }
+
+    @Override
+    public void drawSpriteStretched(SpriteRef sprite, int x, int y, int width, int height, int color) {
+        TextureAtlasSprite mcSprite = (TextureAtlasSprite) sprite;
+        if (color == 0 || width == 0 || height == 0)
+            return;
+
+        drawTexturedQuad(mcSprite.atlasLocation(), x, x + width, y, y + height,
+                mcSprite.getU0(), mcSprite.getU1(), mcSprite.getV0(), mcSprite.getV1(), color);
+    }
+
+    @Override
+    public void draw() {
+        // No-op for now
+    }
+
+    public void drawBorder(int x, int y, int width, int height, int color) {
+        fill(x, y, x + width, y + 1, color);
+        fill(x, y + height - 1, x + width, y + height, color);
+        fill(x, y + 1, x + 1, y + height - 1, color);
+        fill(x + width - 1, y + 1, x + width, y + height - 1, color);
+    }
+
+    public void addEntity(EntityRenderState entityState, float scale, Vector3f translation, Quaternionf rotation,
+            @Nullable Quaternionf overrideCameraAngle, int x1, int y1, int x2, int y2) {
+
+        Matrix3x2f mat = this.matrices.stack;
+        float offsetX = mat.m20;
+        float offsetY = mat.m21;
+        float scaleX = mat.m00; // current matrix X scale
+        float scaleY = mat.m11; // current matrix Y scale
+
+        int adjustedX1 = (int) (x1 * scaleX + offsetX);
+        int adjustedY1 = (int) (y1 * scaleY + offsetY);
+        int adjustedX2 = (int) (x2 * scaleX + offsetX);
+        int adjustedY2 = (int) (y2 * scaleY + offsetY);
+
+        float adjustedScale = scale * scaleX; // apply matrix scale to entity scale too
+
+        this.state.submitPicturesInPictureState(new GuiEntityRenderState(entityState, translation, rotation,
+                overrideCameraAngle, adjustedX1, adjustedY1, adjustedX2, adjustedY2, adjustedScale,
+                this.scissorStack.peekLast()));
+    }
+}
+//?} else {
+/*import java.util.ArrayDeque;
+import java.util.Deque;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+import java.util.function.Consumer;
+
+import org.jetbrains.annotations.Nullable;
+import org.joml.Matrix4f;
+
+import com.mojang.blaze3d.systems.RenderSystem;
+
+import org.saturnclient.common.ref.asset.IdentifierRef;
+import org.saturnclient.common.ref.asset.SpriteRef;
+import org.saturnclient.common.ref.game.ItemStackRef;
+import org.saturnclient.common.ref.render.MatrixStackRef;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.saturnclient.saturnclient.mixin.DrawContextAccessor;
+import org.saturnclient.ui.RenderScope;
+import org.saturnclient.ui.resources.Fonts;
+import org.saturnclient.ui.resources.SvgTexture;
+
+import net.minecraft.client.gui.Font;
+import net.minecraft.client.gui.Font.DisplayMode;
+import net.minecraft.client.gui.GuiGraphics;
+import net.minecraft.client.gui.navigation.ScreenRectangle;
+import com.mojang.blaze3d.platform.Lighting;
+import net.minecraft.client.renderer.texture.OverlayTexture;
+import net.minecraft.client.renderer.RenderType;
+import com.mojang.blaze3d.vertex.VertexConsumer;
+import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.item.ItemStackRenderState;
+import net.minecraft.client.renderer.texture.TextureAtlasSprite;
+import com.mojang.blaze3d.platform.Window;
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.world.entity.LivingEntity;
+//? if >=1.21.5
+import net.minecraft.world.item.ItemDisplayContext;
+//? if <1.21.5
+//import net.minecraft.world.item.ItemDisplayContext;
+import net.minecraft.world.item.ItemStack;
+
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
+import net.minecraft.ReportedException;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportCategory;
+import net.minecraft.world.level.Level;
+
+public class RenderScopeImpl implements RenderScope {
+    // ----------------------------
+    // Fields
+    // ----------------------------
+    public PoseStack matrices;
+    public MultiBufferSource.BufferSource vertexConsumers;
+    private ScissorStack scissorStack = new ScissorStack();
+    private int opacity = 255 << 24;
+    // The glass blurs made for this scope's frame
+    private final Set<Integer> capturedBlurs = new HashSet<>();
+    private final ItemStackRenderState itemRenderState;
+
+    // ----------------------------
+    // Constructors
+    // ----------------------------
+    public RenderScopeImpl(GuiGraphics context) {
+        this(context.pose(), ((DrawContextAccessor) context).getVertexConsumers());
+    }
+
+    public RenderScopeImpl(PoseStack matrices, MultiBufferSource.BufferSource vertexConsumers) {
+        this.matrices = matrices;
+        this.vertexConsumers = vertexConsumers;
+        this.scissorStack = new ScissorStack();
+        this.itemRenderState = new ItemStackRenderState();
+    }
+
+    // ----------------------------
+    // Matrix & Transform
+    // ----------------------------
+    @Override
+    public MatrixStackRef getMatrixStack() {
+        return (MatrixStackRef) matrices;
+    }
+
+    // ----------------------------
+    // Color & Opacity
+    // ----------------------------
+    @Override
+    public void setOpacity(float alpha) {
+        this.opacity = (int) (alpha * 255) << 24;
+    }
+
+    @Override
+    public int getColor(int color) {
+        int originalAlpha = (color >>> 24) & 0xFF;
+        int newAlpha = (opacity >>> 24) & 0xFF;
+        int mixedAlpha = (originalAlpha * newAlpha) / 255;
+        return (mixedAlpha << 24) | (color & 0x00FFFFFF);
+    }
+
+    // ----------------------------
+    // Draw / Window Info
+    // ----------------------------
+    @Override
+    public void draw() {
+        this.vertexConsumers.endBatch();
+    }
+
+    @Override
+    public int getScaledWindowWidth() {
+        return SaturnClient.client.getWindow().getGuiScaledWidth();
+    }
+
+    @Override
+    public int getScaledWindowHeight() {
+        return SaturnClient.client.getWindow().getGuiScaledHeight();
+    }
+
+    public void draw(Consumer<MultiBufferSource> drawer) {
+        drawer.accept(this.vertexConsumers);
+        this.vertexConsumers.endBatch();
+    }
+
+    // ----------------------------
+    // Shapes
+    // ----------------------------
+    @Override
+    public void drawRectangle(int x, int y, int width, int height, int color) {
+        if (color == 0)
+            return;
+        color = getColor(color);
+
+        Matrix4f matrix4f = this.matrices.last().pose();
+
+        int x1 = x;
+        int x2 = x + width;
+        int y1 = y;
+        int y2 = y + height;
+
+        if (x1 < x2) {
+            int tmp = x1;
+            x1 = x2;
+            x2 = tmp;
+        }
+        if (y1 < y2) {
+            int tmp = y1;
+            y1 = y2;
+            y2 = tmp;
+        }
+
+        VertexConsumer vertexConsumer = this.vertexConsumers.getBuffer(RenderType.gui());
+        vertexConsumer.addVertex(matrix4f, x1, y1, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, 0).setColor(color);
+    }
+
+    @Override
+    public void fill(int x1, int y1, int x2, int y2, int color) {
+        fill(x1, y1, x2, y2, 0, color);
+    }
+
+    public void fill(int x1, int y1, int x2, int y2, int z, int color) {
+        fill(RenderType.gui(), x1, y1, x2, y2, z, color);
+    }
+
+    public void fill(RenderType layer, int x1, int y1, int x2, int y2, int color) {
+        fill(layer, x1, y1, x2, y2, 0, color);
+    }
+
+    public void fill(RenderType layer, int x1, int y1, int x2, int y2, int z, int color) {
+        Matrix4f matrix4f = this.matrices.last().pose();
+        if (x1 < x2) {
+            int tmp = x1;
+            x1 = x2;
+            x2 = tmp;
+        }
+        if (y1 < y2) {
+            int tmp = y1;
+            y1 = y2;
+            y2 = tmp;
+        }
+
+        VertexConsumer vertexConsumer = this.vertexConsumers.getBuffer(layer);
+        vertexConsumer.addVertex(matrix4f, x1, y1, z).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, z).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, z).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, z).setColor(color);
+    }
+
+    @Override
+    public void drawBorder(int x, int y, int width, int height, int color) {
+        fill(x, y, x + width, y + 1, color);
+        fill(x, y + height - 1, x + width, y + height, color);
+        fill(x, y + 1, x + 1, y + height - 1, color);
+        fill(x + width - 1, y + 1, x + width, y + height - 1, color);
+    }
+
+    // ----------------------------
+    // Text
+    // ----------------------------
+    @Override
+    public void drawText(String text, int x, int y, int font, int color) {
+        drawText(1.0f, text, x, y, font, color);
+    }
+
+    @Override
+    public void drawText(float scale, String text, int x, int y, int font, int color) {
+        if (color == 0)
+            return;
+        if (font == 0)
+            scale *= 2;
+
+        int i = 0;
+        for (String line : text.split("\n")) {
+            color = getColor(color);
+            matrices.pushPose();
+            matrices.translate(x, y + i * Fonts.getHeight(), 0);
+            matrices.scale(scale, scale, 1.0f);
+            Font textRenderer = SaturnClient.client.font;
+            textRenderer.drawInBatch((Component) Fonts.setFont(line, font), 0, font == 0 ? 1 : 7, color, false,
+                    matrices.last().pose(), vertexConsumers, DisplayMode.NORMAL, 0, 15728880);
+            matrices.popPose();
+            i++;
+        }
+    }
+
+    // ----------------------------
+    // Textures & Sprites
+    // ----------------------------
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height) {
+        drawTexture(sprite, x, y, u, v, width, height, width, height, width, height);
+    }
+
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height, int color) {
+        drawTexture(sprite, x, y, u, v, width, height, width, height, width, height, color);
+    }
+
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height,
+            int regionWidth, int regionHeight, int textureWidth, int textureHeight) {
+        drawTexture(sprite, x, y, u, v, width, height, regionWidth, regionHeight, textureWidth, textureHeight, -1);
+    }
+
+    @Override
+    public void drawTexture(IdentifierRef sprite, int x, int y, float u, float v, int width, int height,
+            int regionWidth, int regionHeight, int textureWidth, int textureHeight, int color) {
+        drawTexturedQuad((Identifier) (Object) sprite, x, x + width, y, y + height,
+                (u + 0.0f) / textureWidth, (u + regionWidth) / textureWidth,
+                (v + 0.0f) / textureHeight, (v + regionHeight) / textureHeight, color);
+    }
+
+    @Override
+    public void drawSpriteStretched(SpriteRef sprite, int x, int y, int width, int height) {
+        drawSpriteStretched(sprite, x, y, width, height, -1);
+    }
+
+    @Override
+    public void drawSpriteStretched(SpriteRef saturnSprite, int x, int y, int width, int height, int color) {
+        TextureAtlasSprite sprite = (TextureAtlasSprite) saturnSprite;
+        if (color == 0)
+            return;
+        if (width != 0 && height != 0) {
+            drawTexturedQuad(sprite.atlasLocation(), x, x + width, y, y + height,
+                    sprite.getU0(), sprite.getU1(), sprite.getV0(), sprite.getV1(), color);
+        }
+    }
+
+    private void drawTexturedQuad(Identifier sprite, int x1, int x2, int y1, int y2,
+            float u1, float u2, float v1, float v2, int color) {
+        if (sprite.toString().endsWith(".svg")) {
+            sprite = (Identifier) (Object) SvgTexture.getSvg((IdentifierRef) (Object) sprite, (x2 - x1) * 2,
+                    (y2 - y1) * 2);
+        }
+        if (color == 0)
+            return;
+
+        x1 *= 4;
+        x2 *= 4;
+        y1 *= 4;
+        y2 *= 4;
+        color = getColor(color);
+
+        matrices.pushPose();
+        matrices.scale(0.25f, 0.25f, 1.0f);
+        //? if <1.21.5
+        //RenderSystem.setShaderTexture(0, sprite);
+        RenderType renderLayer = RenderType.guiTextured(sprite);
+        Matrix4f matrix4f = matrices.last().pose();
+        VertexConsumer vertexConsumer = vertexConsumers.getBuffer(renderLayer);
+        vertexConsumer.addVertex(matrix4f, x1, y1, 0).setUv(u1, v1).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, 0).setUv(u1, v2).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, 0).setUv(u2, v2).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, 0).setUv(u2, v1).setColor(color);
+        matrices.popPose();
+    }
+
+    @Override
+    public void drawGlass(IdentifierRef mask, int x, int y, int width, int height, int blur) {
+        int color = getColor(0xFFFFFFFF);
+        if (mask == null || color >>> 24 == 0)
+            return;
+
+        if (capturedBlurs.add(blur)) {
+            GlassRenderer.captureBackdrop(blur);
+        }
+
+        // In quarter units, as drawTexturedQuad draws
+        int x1 = x * 4;
+        int x2 = (x + width) * 4;
+        int y1 = y * 4;
+        int y2 = (y + height) * 4;
+
+        matrices.pushPose();
+        matrices.scale(0.25f, 0.25f, 1.0f);
+        Matrix4f matrix4f = matrices.last().pose();
+        VertexConsumer vertexConsumer = vertexConsumers.getBuffer(GlassRenderer.getLayer((Identifier) (Object) mask, blur));
+        vertexConsumer.addVertex(matrix4f, x1, y1, 0).setUv(0, 0).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x1, y2, 0).setUv(0, 1).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y2, 0).setUv(1, 1).setColor(color);
+        vertexConsumer.addVertex(matrix4f, x2, y1, 0).setUv(1, 0).setColor(color);
+        matrices.popPose();
+    }
+
+    // ----------------------------
+    // Items
+    // ----------------------------
+    @Override
+    public void drawItem(ItemStackRef item, int x, int y) {
+        drawItem(SaturnClient.client.player, SaturnClient.client.level, item, x, y, 0);
+    }
+
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStackRef stack, int x, int y,
+            int seed) {
+        drawItem(entity, world, (ItemStack) (Object) stack, x, y, seed, 0);
+    }
+
+    private void drawItem(@Nullable LivingEntity entity, @Nullable Level world, ItemStack stack, int x, int y, int seed,
+            int z) {
+        if (stack.isEmpty())
+            return;
+
+        //? if >=1.21.5
+        SaturnClient.client.getItemModelResolver().appendItemLayers(itemRenderState, stack, ItemDisplayContext.GUI, world, entity, seed);
+        //? if >=1.21.5
+        SaturnClient.client.getItemModelResolver().updateForTopItem(this.itemRenderState, stack, ItemDisplayContext.GUI, world, entity, seed);
+        //? if <1.21.5
+        //SaturnClient.client.getItemModelResolver().updateForTopItem(itemRenderState, stack, ItemDisplayContext.GUI, false, world, entity, seed);
+
+        this.matrices.pushPose();
+        //? if >=1.21.5
+        this.matrices.translate((float) (x + 8), (float) (y + 8), (float) (150 + z));
+        //? if <1.21.5
+        //this.matrices.translate(x + 8, y + 8, 150 + (itemRenderState.isGui3d() ? z : 0));
+
+        try {
+            this.matrices.scale(16.0F, -16.0F, 16.0F);
+            boolean bl = !this.itemRenderState.usesBlockLight();
+            if (bl) {
+                this.draw();
+                Lighting.setupForFlatItems();
+            }
+
+            this.itemRenderState.render(this.matrices, this.vertexConsumers, 15728880, OverlayTexture.NO_OVERLAY);
+            this.draw();
+            if (bl) {
+                Lighting.setupFor3DItems();
+            }
+        } catch (Throwable throwable) {
+            CrashReport crashReport = CrashReport.forThrowable(throwable, "Rendering item");
+            CrashReportCategory crashReportSection = crashReport.addCategory("Item being rendered");
+            crashReportSection.setDetail("Item Type", () -> String.valueOf(stack.getItem()));
+            crashReportSection.setDetail("Item Components", () -> String.valueOf(stack.getComponents()));
+            crashReportSection.setDetail("Item Foil", () -> String.valueOf(stack.hasFoil()));
+            throw new ReportedException(crashReport);
+        }
+
+        this.matrices.popPose();
+    }
+
+    // ----------------------------
+    // Scissor / Clipping
+    // ----------------------------
+    @Override
+    public void enableScissor(int x1, int y1, int x2, int y2) {
+        ScreenRectangle screenRect = new ScreenRectangle(x1, y1, x2 - x1, y2 - y1)
+                .transformAxisAligned(matrices.last().pose());
+        setScissor(scissorStack.push(screenRect));
+    }
+
+    @Override
+    public void disableScissor() {
+        setScissor(scissorStack.pop());
+    }
+
+    @Override
+    public boolean scissorContains(int x, int y) {
+        return scissorStack.containsPoint(x, y);
+    }
+
+    private void setScissor(@Nullable ScreenRectangle rect) {
+        draw();
+        if (rect != null) {
+            Window window = SaturnClient.client.getWindow();
+            int framebufferHeight = window.getHeight();
+            double scaleFactor = window.getGuiScale();
+            RenderSystem.enableScissor(
+                    (int) (rect.left() * scaleFactor),
+                    (int) (framebufferHeight - rect.bottom() * scaleFactor),
+                    Math.max(0, (int) (rect.width() * scaleFactor)),
+                    Math.max(0, (int) (rect.height() * scaleFactor)));
+        } else {
+            RenderSystem.disableScissor();
+        }
+    }
+
+    static class ScissorStack {
+        private final Deque<ScreenRectangle> stack = new ArrayDeque<>();
+
+        public ScreenRectangle push(ScreenRectangle p_281812_) {
+            ScreenRectangle screenrectangle = this.stack.peekLast();
+            if (screenrectangle != null) {
+                ScreenRectangle screenrectangle1 = Objects.requireNonNullElse(p_281812_.intersection(screenrectangle),
+                        ScreenRectangle.empty());
+                this.stack.addLast(screenrectangle1);
+                return screenrectangle1;
+            } else {
+                this.stack.addLast(p_281812_);
+                return p_281812_;
+            }
+        }
+
+        @Nullable
+        public ScreenRectangle pop() {
+            if (this.stack.isEmpty()) {
+                throw new IllegalStateException("Scissor stack underflow");
+            } else {
+                this.stack.removeLast();
+                return this.stack.peekLast();
+            }
+        }
+
+        public boolean containsPoint(int p_329411_, int p_333404_) {
+            return this.stack.isEmpty() ? true : this.stack.peek().containsPoint(p_329411_, p_333404_);
+        }
+    }
+}
+*///?}

src/main/java/org/saturnclient/impl/ui/SaturnScreenFabric.java

@@ -0,0 +1,297 @@
+package org.saturnclient.impl.ui;
+
+import java.time.Duration;
+import java.time.Instant;
+
+import org.saturnclient.config.Config;
+import org.saturnclient.impl.provider.Keys;
+import org.saturnclient.ui.RenderScope;
+import org.saturnclient.ui.SaturnScreen;
+import org.saturnclient.ui.SaturnScreen.ScreenProvider;
+
+import net.minecraft.client.Minecraft;
+//? if >=1.21.9
+import net.minecraft.client.input.MouseButtonEvent;
+import net.minecraft.client.renderer.CubeMap;
+import net.minecraft.client.gui.GuiGraphics;
+//? if >=26.1 {
+/*import net.minecraft.client.renderer.Panorama;
+*///?} else
+import net.minecraft.client.renderer.PanoramaRenderer;
+import net.minecraft.client.gui.screens.Screen;
+//? if >=1.21.6 {
+import net.minecraft.client.renderer.texture.CubeMapTexture;
+//?} else {
+/*import net.minecraft.client.renderer.texture.SimpleTexture;
+import net.minecraft.client.renderer.texture.TextureManager;
+*///?}
+//? if >=1.21.9
+import net.minecraft.client.input.KeyEvent;
+//? if <1.21.6 {
+/*import net.minecraft.client.renderer.PostChain;
+import net.minecraft.client.renderer.LevelTargetBundle;
+import com.mojang.blaze3d.resource.CrossFrameResourcePool;
+*///?}
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.Identifier;
+
+public class SaturnScreenFabric extends Screen implements ScreenProvider {
+    protected static final Identifier PANORAMA = Identifier.fromNamespaceAndPath("saturnclient",
+            "textures/gui/title/background/panorama");
+    public static final CubeMap PANORAMA_RENDERER = new CubeMap(PANORAMA);
+
+    // From 26.1 vanilla draws the panorama from its own cube map; GuiRendererMixin swaps in Saturn's.
+    //? if >=26.1 {
+    /*public static final Panorama ROTATING_PANORAMA_RENDERER = new Panorama();
+    *///?} else {
+    public static final PanoramaRenderer ROTATING_PANORAMA_RENDERER;
+
+    static {
+        ROTATING_PANORAMA_RENDERER = new PanoramaRenderer(PANORAMA_RENDERER);
+    }
+    //?}
+
+    //? if <1.21.6
+    //private final CrossFrameResourcePool pool = new CrossFrameResourcePool(3);
+    public final SaturnScreen screen;
+
+    /** Whether the panorama's textures are loaded; it isn't drawn before (e.g. under the splash). */
+    private static volatile boolean panoramaReady = false;
+
+    public static void preload(Minecraft client) {
+        //? if >=1.21.6 {
+        // From 1.21.6 CubeMapRenderer draws from one cube map texture made of panorama_0..5.png.
+        // CubeMapRenderer.registerTextures only stores it for the next resource reload, which has
+        // already happened by now, so register it through the overload that loads it right away.
+        client.getTextureManager().registerAndLoad(PANORAMA, new CubeMapTexture(PANORAMA));
+        //?} else {
+        /*TextureManager textureManager = client.getTextureManager();
+        for (int i = 0; i < 6; i++) {
+            String var10001 = PANORAMA.getPath();
+            Identifier tex = PANORAMA.withPath(var10001 + "_" + i + ".png");
+            SimpleTexture resourceTexture = new SimpleTexture(tex);
+            textureManager.registerAndLoad(tex, resourceTexture);
+        }
+        *///?}
+        panoramaReady = true;
+    }
+
+    public SaturnScreenFabric(SaturnScreen screen) {
+        super(Component.literal(screen.title));
+        screen.provider = this;
+        this.screen = screen;
+    }
+
+    @Override
+    protected void init() {
+        screen.init();
+    }
+
+    //? if <1.21.6
+    //@SuppressWarnings("deprecation")
+    @Override
+    //? if >=26.1 {
+    /*public void extractRenderState(GuiGraphics context, int mouseX, int mouseY, float delta) {
+    *///?} else
+    public void render(GuiGraphics context, int mouseX, int mouseY, float delta) {
+        if (screen.start == null) {
+            screen.start = Instant.now();
+        }
+        long elapsed = Duration.between(screen.start, Instant.now()).toMillis();
+
+        screen.updateScale();
+
+        mouseX = (int) (mouseX / screen.scale);
+        mouseY = (int) (mouseY / screen.scale);
+
+        // From 1.21.6 the background, blur included, is drawn in renderBackground.
+        //? if <1.21.6 {
+        /*if (isShowingPanorama()) {
+            ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, screen.backgroundOpacity, delta);
+        }
+
+        // Glass is blurred from the game as it is before this screen blurs it.
+        if (Config.usesGlass()) {
+            context.flush();
+            GlassRenderer.saveBackground();
+        }
+
+        float radius = screen.getBackgroundBlur();
+        PostChain postEffectProcessor = radius < 1 ? null : this.minecraft.getShaderManager().getPostChain(
+                Identifier.withDefaultNamespace("blur"),
+                LevelTargetBundle.MAIN_TARGETS);
+
+        if (postEffectProcessor != null) {
+            //? if >=1.21.5
+            postEffectProcessor.process(this.minecraft.getMainRenderTarget(), this.pool, pass -> pass.setUniform("Radius", radius));
+            //? if <1.21.5
+            //postEffectProcessor.setUniform("Radius", radius);
+            //? if <1.21.5
+            //postEffectProcessor.process(this.minecraft.getMainRenderTarget(), this.pool);
+        }
+        *///?}
+
+        RenderScope renderScope = new RenderScopeImpl(context);
+
+        screen.render(renderScope, mouseX, mouseY, delta, elapsed);
+    }
+
+    //? if >=1.21.6 {
+    // Vanilla's background would cover Saturn's panorama, and blurs by the vanilla setting. The
+    // strength of this blur comes from GameRendererMixin, which gives Saturn's setting instead.
+    @Override
+    //? if >=26.1 {
+    /*public void extractBackground(GuiGraphics context, int mouseX, int mouseY, float delta) {
+    *///?} else
+    public void renderBackground(GuiGraphics context, int mouseX, int mouseY, float delta) {
+        // The panorama renderer has no opacity (and takes no delta) from 1.21.6, so it's drawn fully
+        // opaque.
+        if (isShowingPanorama()) {
+            //? if >=26.2 {
+            /*ROTATING_PANORAMA_RENDERER.extractRenderState(context, this.width, this.height);
+            *///?} else if >=26.1 {
+            /*ROTATING_PANORAMA_RENDERER.extractRenderState(context, this.width, this.height, true);
+            *///?} else
+            ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, true);
+        }
+
+        if (screen.getBackgroundBlur() >= 1) {
+            context.blurBeforeThisStratum();
+        }
+
+        if (minecraft.level != null) {
+            //? if >=26.1 {
+            /*extractMenuBackground(context);
+            *///?} else
+            renderMenuBackground(context);
+        }
+    }
+    //?}
+
+    /** Whether Saturn's panorama is behind the screen: outside a world, once it's loaded. */
+    private boolean isShowingPanorama() {
+        return panoramaReady && minecraft.level == null && minecraft.getCurrentServer() == null;
+    }
+
+    // 1.21.9 moved mouse and key events to Click and KeyInput.
+    //? if >=1.21.9 {
+    @Override
+    public boolean mouseClicked(MouseButtonEvent click, boolean doubled) {
+        if (screen.mouseClicked(click.x(), click.y(), Keys.mouseButtonToSaturn(click.button()))) {
+            return true;
+        }
+
+        return super.mouseClicked(click, doubled);
+    }
+
+    @Override
+    public boolean mouseDragged(MouseButtonEvent click, double offsetX, double offsetY) {
+        // offsetX and offsetY are the drag deltas, as mouseDragged's deltaX and deltaY were before 1.21.9.
+        if (screen.mouseDragged(click.x(), click.y(), Keys.mouseButtonToSaturn(click.button()), offsetX, offsetY)) {
+            return true;
+        }
+
+        return super.mouseDragged(click, offsetX, offsetY);
+    }
+
+    @Override
+    public boolean mouseReleased(MouseButtonEvent click) {
+        if (screen.mouseReleased(click.x(), click.y(), Keys.mouseButtonToSaturn(click.button()))) {
+            return true;
+        }
+
+        return super.mouseReleased(click);
+    }
+    //?} else {
+    /*@Override
+    public boolean mouseClicked(double mouseX, double mouseY, int button) {
+        if (screen.mouseClicked(mouseX, mouseY, button)) {
+            return true;
+        }
+        return super.mouseClicked(mouseX, mouseY, button);
+    }
+
+    @Override
+    public boolean mouseDragged(double mouseX, double mouseY, int button, double deltaX, double deltaY) {
+        if (screen.mouseDragged(mouseX, mouseY, button, deltaX, deltaY)) {
+            return true;
+        }
+        return super.mouseDragged(mouseX, mouseY, button, deltaX, deltaY);
+    }
+
+    @Override
+    public boolean mouseReleased(double mouseX, double mouseY, int button) {
+        if (screen.mouseReleased(mouseX, mouseY, button)) {
+            return true;
+        }
+        return super.mouseReleased(mouseX, mouseY, button);
+    }
+    *///?}
+
+    @Override
+    public boolean mouseScrolled(double mouseX, double mouseY, double horizontalAmount, double verticalAmount) {
+        if (screen.mouseScrolled(mouseX, mouseY, horizontalAmount, verticalAmount)) {
+            return true;
+        }
+        return super.mouseScrolled(mouseX, mouseY, horizontalAmount, verticalAmount);
+    }
+
+    //? if >=1.21.9 {
+    @Override
+    public boolean keyPressed(KeyEvent input) {
+        // 26.3's key() is SDL's scancode; Saturn's key codes are GLFW's (see Keys).
+        //? if >=26.3 {
+        /*if (screen.keyPressed(Keys.toSaturn(input.key()), input.key(), Keys.modifiersToSaturn(input.modifiers()))) {
+        *///?} else
+        if (screen.keyPressed(input.input(), input.scancode(), input.modifiers())) {
+            return true;
+        }
+
+        return super.keyPressed(input);
+    }
+    //?} else {
+    /*@Override
+    public boolean keyPressed(int keyCode, int scanCode, int modifiers) {
+        if (screen.keyPressed(keyCode, scanCode, modifiers)) {
+            return true;
+        }
+        return super.keyPressed(keyCode, scanCode, modifiers);
+    }
+    *///?}
+
+    //? if >=1.21.11 {
+    @Override
+    public void resize(int width, int height) {
+        screen.resize(width, height);
+        super.resize(width, height);
+    }
+    //?} else {
+    /*@Override
+    public void resize(Minecraft client, int width, int height) {
+        screen.resize(width, height);
+        super.resize(client, width, height);
+    }
+    *///?}
+
+    @Override
+    public void onClose() {
+        this.screen.onClose();
+        super.onClose();
+    }
+
+    // ScreenProvider's close, separate from the vanilla onClose above.
+    @Override
+    public void close() {
+        onClose();
+    }
+
+    @Override
+    public int getWidth() {
+        return width;
+    }
+
+    @Override
+    public int getHeight() {
+        return height;
+    }
+}

src/main/java/org/saturnclient/impl/ui/Screens.java

@@ -0,0 +1,33 @@
+package org.saturnclient.impl.ui;
+
+import org.jetbrains.annotations.Nullable;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.screens.Screen;
+
+/** The open screen and overlay, which Minecraft holds before 26.2 and its Gui from 26.2. */
+public final class Screens {
+    private Screens() {
+    }
+
+    public static @Nullable Screen current() {
+        //? if >=26.2 {
+        /*return Minecraft.getInstance().gui.screen();
+        *///?} else
+        return Minecraft.getInstance().screen;
+    }
+
+    public static void set(@Nullable Screen screen) {
+        //? if >=26.2 {
+        /*Minecraft.getInstance().gui.setScreen(screen);
+        *///?} else
+        Minecraft.getInstance().setScreen(screen);
+    }
+
+    public static void clearOverlay() {
+        //? if >=26.2 {
+        /*Minecraft.getInstance().gui.setOverlay(null);
+        *///?} else
+        Minecraft.getInstance().setOverlay(null);
+    }
+}

src/main/java/org/saturnclient/saturnclient/SaturnClient.java

@@ -2,22 +2,26 @@ package org.saturnclient.saturnclient;
 
 import net.fabricmc.api.ModInitializer;
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents;
-import net.fabricmc.fabric.api.client.screen.v1.ScreenEvents;
-import net.minecraft.client.gui.screen.TitleScreen;
+import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
+import net.minecraft.client.Minecraft;
 
-import org.saturnclient.saturnclient.auth.Auth;
-import org.saturnclient.saturnclient.config.ConfigManager;
-import org.saturnclient.saturnclient.cosmetics.Hats;
-import org.saturnclient.saturnclient.cosmetics.cloaks.Cloaks;
+import org.saturnclient.client.ServiceClient;
+import org.saturnclient.cosmetics.Emotes;
+import org.saturnclient.common.provider.Providers;
+import org.saturnclient.impl.provider.GLFWProviderImpl;
+import org.saturnclient.impl.provider.FeatureProviderFabric;
+import org.saturnclient.impl.provider.RefConstructorImpl;
+import org.saturnclient.impl.provider.SaturnProviderImpl;
+import org.saturnclient.impl.ui.EntityDrawerImpl;
+import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.mod.ModManager;
 import org.saturnclient.saturnclient.event.KeyInputHandler;
-import org.saturnclient.saturnclient.menus.SaturnMenu;
-import org.saturnclient.saturnclient.menus.SaturnTitleScreen;
-import org.saturnclient.saturnmods.ModManager;
+import org.saturnclient.config.Config;
+import org.saturnclient.config.ConfigManager;
+import org.saturnclient.ui.components.SkinPreview;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import dev.felnull.specialmodelloader.api.event.SpecialModelLoaderEvents;
-
 /**
  * Main class for the Saturn Client mod.
  */
@@ -25,32 +29,36 @@ public class SaturnClient implements ModInitializer {
 
     public static final String MOD_ID = "saturnclient";
     public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
+    public static Minecraft client;
 
     @Override
     public void onInitialize() {
         LOGGER.info("Initializing " + MOD_ID);
-        ModManager.init();
-        ConfigManager.load();
+        client = Minecraft.getInstance();
 
-        ClientLifecycleEvents.CLIENT_STOPPING.register(_o -> ConfigManager.save());
-        ScreenEvents.BEFORE_INIT.register((client, screen, scaledWidth, scaledHeight) -> {
-            if (SaturnClientConfig.saturnTitleScreen.value && screen instanceof TitleScreen
-                    && !(screen instanceof SaturnMenu)) {
-                client.setScreen(new SaturnTitleScreen());
-            }
+        Providers.saturn = new SaturnProviderImpl();
+        Providers.refConstructor = new RefConstructorImpl();
+        Providers.GLFW = new GLFWProviderImpl();
+        Providers.feature = new FeatureProviderFabric(client);
+        SkinPreview.DRAWER = new EntityDrawerImpl();
+
+        Config.init();
+        ModManager.init();
+
+        client.execute(() -> {
+            SaturnScreenFabric.preload(client);
         });
 
-        SpecialModelLoaderEvents.LOAD_SCOPE.register(() -> {
-            return (resourceManager, location) -> MOD_ID.equals(location.getNamespace());
+        ClientLifecycleEvents.CLIENT_STOPPING.register(_o -> ConfigManager.save());
+
+        ClientTickEvents.END_CLIENT_TICK.register(client -> {
+            for (org.saturnclient.mod.Mod m : ModManager.ENABLED_MODS) {
+                m.tick();
+            }
         });
 
         KeyInputHandler.register();
-        if (Auth.authenticate()) {
-            Cloaks.initialize();
-            Hats.initialize();
-            LOGGER.info(MOD_ID + " initialization complete");
-        } else {
-            LOGGER.error("Failed to authenticate with the server");
-        }
+        Emotes.initialize();
+        ServiceClient.initialize();
     }
 }

src/main/java/org/saturnclient/saturnclient/SaturnClientConfig.java

@@ -1,59 +0,0 @@
-package org.saturnclient.saturnclient;
-
-import org.saturnclient.saturnclient.config.Property;
-import org.saturnclient.saturnclient.config.ConfigManager;
-import org.saturnclient.ui.SaturnAnimation;
-import org.saturnclient.ui.SaturnUi;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.animations.FadeIn;
-
-import net.minecraft.client.font.TextRenderer;
-import net.minecraft.util.Identifier;
-import net.minecraft.util.math.ColorHelper;
-
-public class SaturnClientConfig {
-    public static ConfigManager config = new ConfigManager("Saturn Client");
-
-    public static Property<Integer> color = config.property(
-            "Primary color",
-            new Property<>(
-                    ColorHelper.getArgb(255, 251, 60, 79),
-                    Property.PropertyType.HEX));
-
-    public static Property<Integer> normal = config.property(
-            "Default color",
-            new Property<>(
-                    ColorHelper.getArgb(255, 182, 182, 182),
-                    Property.PropertyType.HEX));
-
-    public static Property<Boolean> realisticLogo = config.property(
-            "Realistic logo",
-            new Property<>(false));
-
-    public static Property<Boolean> saturnTitleScreen = config.property(
-            "Saturn client title screen",
-            new Property<>(true));
-
-    public static int WHITE = ColorHelper.getArgb(255, 255, 255, 255);
-    public static TextRenderer textRenderer = null;
-
-    public static int getWhite(float alpha) {
-        return ((int) (alpha * 255) << 24) | (normal.value & 0x00FFFFFF);
-    }
-
-    public static int getColor(boolean hovering, float alpha) {
-        return SaturnUi.getAlpha(hovering ? color.value : normal.value, alpha);
-    }
-
-    public static SaturnAnimation[] getAnimations() {
-        return new SaturnAnimation[] { new FadeIn(1) };
-    }
-
-    public static Identifier getLogo() {
-        return realisticLogo.value ? Textures.REALISTIC_LOGO : Textures.LOGO;
-    }
-
-    public static String getSaturnIndicator() {
-        return realisticLogo.value ? "" : "";
-    }
-}

src/main/java/org/saturnclient/saturnclient/SaturnRenderState.java

@@ -0,0 +1,24 @@
+package org.saturnclient.saturnclient;
+
+//? if >=1.21.11
+import org.jspecify.annotations.NonNull;
+//? if >=1.21.8 {
+import org.saturnclient.client.player.SaturnPlayer;
+
+import net.fabricmc.fabric.api.client.rendering.v1.RenderStateDataKey;
+//?}
+
+/**
+ * The key PlayerEntityRendererMixin stores each player's SaturnPlayer under in their render state.
+ * Fabric API's render state data only exists from 1.21.8, so older versions look players up by name.
+ */
+public class SaturnRenderState {
+    //? if >=1.21.11 {
+    @NonNull
+    public static RenderStateDataKey<SaturnPlayer> saturnDataKey = RenderStateDataKey
+            .create(() -> "saturn-client-player");
+    //?} else if >=1.21.8 {
+    /*public static RenderStateDataKey<SaturnPlayer> saturnDataKey = RenderStateDataKey
+            .create(() -> "saturn-client-player");
+    *///?}
+}

src/main/java/org/saturnclient/saturnclient/auth/Auth.java

@@ -1,194 +0,0 @@
-package org.saturnclient.saturnclient.auth;
-
-import java.util.HashMap;
-import java.util.Map;
-import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents;
-import net.minecraft.client.MinecraftClient;
-import org.saturnclient.saturnclient.cosmetics.Hats;
-import org.saturnclient.saturnclient.cosmetics.cloaks.Cloaks;
-import org.saturnclient.saturnclient.SaturnClient;
-
-public class Auth {
-    public static Map<String, SaturnPlayer> players = new HashMap<>();
-    public static Map<String, String> playerNames = new HashMap<>();
-    public static String uuid;
-    private static Thread listenerThread;
-    private static Thread pingThread;
-    private static volatile boolean running = false;
-
-    @SuppressWarnings("resource")
-    public static boolean authenticate() {
-        // Register shutdown hook ONCE
-        ClientLifecycleEvents.CLIENT_STOPPING.register(_o -> close());
-
-        try {
-            MinecraftClient client = MinecraftClient.getInstance();
-            if (client.getSession() == null) {
-                SaturnClient.LOGGER.error("No active Minecraft session found");
-                return false;
-            }
-
-            String accessToken = client.getSession().getAccessToken();
-            SaturnClient.LOGGER.info("Authenticating");
-
-            Network.init();
-
-            Network.write(accessToken);
-
-            String response = Network.read();
-
-            SaturnParser parser = new SaturnParser(response);
-
-            uuid = parser.getString("uuid");
-            String cloak = parser.getString("cloak");
-            String hat = parser.getString("hat");
-
-            for (String availableCloak : parser.getArray("cloaks")) {
-                Cloaks.availableCloaks.add(availableCloak);
-            }
-
-            for (String availableHat : parser.getArray("hats")) {
-                Hats.availableHats.add(availableHat);
-            }
-
-            players.put(uuid, new SaturnPlayer(cloak, hat));
-
-            Cloaks.loadCloak(uuid);
-
-            playerNames.put(client.getSession().getUsername(), uuid);
-
-            afterAuth();
-
-            startListenerThread();
-            startPingThread();
-
-            return true;
-        } catch (Exception e) {
-            SaturnClient.LOGGER.error("Authentication failed", e);
-            return false;
-        }
-    }
-
-    private static void startListenerThread() {
-        running = true;
-        listenerThread = new Thread(() -> {
-            try {
-                while (running) {
-                    String message = Network.read();
-                    if (message == null) {
-                        SaturnClient.LOGGER.error("Connection closed");
-                        running = false;
-                        break;
-                    }
-
-                    SaturnClient.LOGGER.info("Received: " + message);
-
-                    SaturnParser parser = new SaturnParser(message);
-
-                    switch (parser.method) {
-                        case "player":
-                            String uuid = parser.getString("uuid");
-                            if (parser.getBool("saturn")) {
-                                String cloak = parser.getString("cloak");
-                                String hat = parser.getString("hat");
-                                players.put(uuid, new SaturnPlayer(cloak, hat));
-                                Cloaks.loadCloak(uuid);
-                            } else {
-                                playerNames.entrySet().removeIf(entry -> entry.getValue().equals(uuid));
-                            }
-                            break;
-
-                        default:
-                            if (parser.error != null) {
-                                SaturnClient.LOGGER.error("Error from the server: " + parser.error);
-                            }
-                            break;
-                    }
-                }
-            } catch (Exception e) {
-                SaturnClient.LOGGER.error("Error reading from server", e);
-            } finally {
-                close();
-            }
-        });
-
-        listenerThread.setDaemon(true);
-        listenerThread.start();
-    }
-
-    private static void startPingThread() {
-        pingThread = new Thread(() -> {
-            try {
-                while (running) {
-                    Thread.sleep(25000); // 25 seconds
-                    if (running) {
-                        Network.write("ping");
-                    }
-                }
-            } catch (InterruptedException e) {
-                SaturnClient.LOGGER.warn("Ping thread interrupted", e);
-            } catch (Exception e) {
-                SaturnClient.LOGGER.error("Error in ping thread", e);
-            }
-        });
-
-        pingThread.setDaemon(true);
-        pingThread.start();
-    }
-
-    public static void close() {
-        running = false;
-        if (pingThread != null) {
-            pingThread.interrupt();
-        }
-        if (listenerThread != null) {
-            listenerThread.interrupt();
-        }
-        try {
-            close();
-            SaturnClient.LOGGER.info("SaturnApi connection closed.");
-        } catch (Exception e) {
-            SaturnClient.LOGGER.error("Failed to close resources", e);
-        }
-    }
-
-    public static void afterAuth() {
-        PlayerTracker.initialize();
-    }
-
-    public static void setCloak(String cloakName) {
-        try {
-            Network.write("set_cloak@cloak=" + cloakName);
-        } catch (Exception e) {
-            SaturnClient.LOGGER.error("Request failed", e);
-        }
-    }
-
-    public static void setHat(String hatName) {
-        try {
-            Network.write("set_hat@hat=" + hatName);
-        } catch (Exception e) {
-            SaturnClient.LOGGER.error("Request failed", e);
-        }
-    }
-
-    public static void player(String name, String uuid) {
-        try {
-            playerNames.put(name, uuid.replaceAll("-", ""));
-            Network.write("player@uuid=" + uuid.replaceAll("-", ""));
-        } catch (Exception e) {
-            SaturnClient.LOGGER.error("Request failed", e);
-        }
-    }
-
-    public static void sendReload() {
-        for (Map.Entry<String, String> player : playerNames.entrySet()) {
-            if (players.containsKey(player.getValue()) && !player.getValue().equals(uuid)) {
-                MinecraftClient.getInstance().player.networkHandler
-                        .sendChatCommand("msg " + player.getKey() + " "
-                                + "$SATURN_RELOAD if you are seeing this as a player, please report this to https://github.com/saturnclientmc/saturnclient/issues");
-                ;
-            }
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/auth/Network.java

@@ -1,98 +0,0 @@
-package org.saturnclient.saturnclient.auth;
-
-import java.io.*;
-import java.net.*;
-import java.security.*;
-import java.util.Base64;
-import javax.crypto.*;
-import javax.crypto.spec.*;
-import java.security.interfaces.*;
-import java.security.spec.X509EncodedKeySpec;
-
-public class Network {
-    static Socket socket;
-    static PrintWriter out;
-    static BufferedReader in;
-    static byte[] key = new byte[32];
-
-    public static class AES {
-        public static byte[] encryptAES256(String message, byte[] key) throws Exception {
-            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
-            SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
-            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
-            byte[] encryptedMessage = cipher.doFinal(message.getBytes());
-            return encryptedMessage;
-        }
-
-        public static String decryptAES256(byte[] encryptedMessage, byte[] key) throws Exception {
-            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
-            SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
-            cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
-            byte[] decryptedMessage = cipher.doFinal(encryptedMessage);
-            return new String(decryptedMessage);
-        }
-    }
-
-    public static void init() throws Exception {
-        // Generate AES key
-        new SecureRandom().nextBytes(key);
-
-        socket = new Socket("77.247.92.168", 8080);
-        // out = new DataOutputStream(socket.getOutputStream());
-        out = new PrintWriter(socket.getOutputStream(), true);
-        in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
-
-        StringBuilder publicKeyBuilder = new StringBuilder();
-        String line;
-        while (!(line = in.readLine()).contains("-----END PUBLIC KEY-----")) {
-            publicKeyBuilder.append(line).append("\n");
-        }
-        publicKeyBuilder.append(line);
-
-        String publicKeyPem = publicKeyBuilder.toString();
-
-        String publicKeyBase64 = publicKeyPem.replace("-----BEGIN PUBLIC KEY-----", "")
-                .replace("-----END PUBLIC KEY-----", "").replace("\n", "").replace("\r", "");
-        byte[] publicKeyBytes = Base64.getDecoder().decode(publicKeyBase64);
-
-        X509EncodedKeySpec keySpec = new X509EncodedKeySpec(publicKeyBytes);
-        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
-        RSAPublicKey publicKey = (RSAPublicKey) keyFactory.generatePublic(keySpec);
-
-        Cipher rsaCipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
-        rsaCipher.init(Cipher.ENCRYPT_MODE, publicKey);
-        byte[] encryptedKey = rsaCipher.doFinal(key);
-
-        out.println(Base64.getEncoder().encodeToString(encryptedKey));
-    }
-
-    public static void write(String message) {
-        try {
-            out.println(Base64.getEncoder().encodeToString(AES.encryptAES256(message, key)));
-        } catch (Exception e) {
-            throw new RuntimeException("Failed to write to server: " + e.getMessage());
-        }
-    }
-
-    public static String read() {
-        try {
-            String msg = in.readLine();
-            if (msg != null) {
-                return AES.decryptAES256(Base64.getDecoder().decode(msg), key);
-            } else {
-                return "";
-            }
-        } catch (Exception e) {
-            return "";
-        }
-    }
-
-    public static void close() {
-        try {
-            socket.close();
-            out.close();
-            in.close();
-        } catch (Exception e) {
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/auth/PlayerTracker.java

@@ -1,51 +0,0 @@
-package org.saturnclient.saturnclient.auth;
-
-import net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents;
-import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.network.PlayerListEntry;
-
-import java.util.HashSet;
-import java.util.Set;
-import java.util.UUID;
-
-import com.mojang.authlib.GameProfile;
-
-public class PlayerTracker {
-    private static Set<UUID> trackedPlayers = new HashSet<>();
-
-    public static void initialize() {
-        // When client joins a server, reset tracked players
-        ClientPlayConnectionEvents.JOIN.register((handler, sender, client) -> {
-            trackedPlayers.clear();
-            client.execute(() -> {
-                checkForNewPlayers(MinecraftClient.getInstance());
-            });
-        });
-
-        // Check for new players every tick
-        ClientTickEvents.END_CLIENT_TICK.register(client -> checkForNewPlayers(client));
-    }
-
-    private static void checkForNewPlayers(MinecraftClient client) {
-        if (client.getNetworkHandler() == null)
-            return;
-
-        for (PlayerListEntry player : client.getNetworkHandler().getPlayerList()) {
-            UUID playerUUID = player.getProfile().getId();
-
-            if (!trackedPlayers.contains(playerUUID)) {
-                // A new player has joined
-                onPlayerJoin(client, player);
-                trackedPlayers.add(playerUUID);
-            }
-        }
-    }
-
-    private static void onPlayerJoin(MinecraftClient client, PlayerListEntry player) {
-        GameProfile profile = player.getProfile();
-        String uuid = profile.getId().toString();
-        if (uuid != Auth.uuid)
-            Auth.player(profile.getName(), uuid);
-    }
-}

src/main/java/org/saturnclient/saturnclient/auth/SaturnParser.java

@@ -1,66 +0,0 @@
-package org.saturnclient.saturnclient.auth;
-
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
-
-public class SaturnParser {
-    public String method = "";
-    public String error;
-    private Map<String, String> params = new HashMap<>();
-
-    public SaturnParser(String input) throws IOException {
-        String[] parts = input.split("@");
-
-        if (parts.length == 0) {
-            throw new IOException("Invalid input string");
-        }
-
-        if (parts[0].startsWith("!")) {
-            error = input;
-        }
-
-        method = parts[0];
-
-        for (int i = 1; i < parts.length; i++) {
-            String[] keyValue = parts[i].split("=");
-            if (keyValue.length == 2) {
-                params.put(keyValue[0].trim(), keyValue[1].trim());
-            } else if (keyValue.length == 1) {
-                params.put(keyValue[0].trim(), "");
-            } else {
-                throw new IOException("Invalid parameter format: " + parts[i]);
-            }
-        }
-    }
-
-    public String getString(String i) throws IOException {
-        String val = params.get(i);
-        if (val != null) {
-            return val;
-        } else {
-            throw new IOException("Parameter not found " + i);
-        }
-    }
-
-    public boolean getBool(String i) throws IOException {
-        String val = params.get(i);
-        if (val != null) {
-            return val.equals("true");
-        } else {
-            throw new IOException("Parameter not found " + i);
-        }
-    }
-
-    public String[] getArray(String i) throws IOException {
-        String val = params.get(i);
-        if (val != null) {
-            if (val.isEmpty()) {
-                return new String[] {};
-            }
-            return val.split("\\$");
-        } else {
-            throw new IOException("Parameter not found " + i);
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/auth/SaturnPlayer.java

@@ -1,11 +0,0 @@
-package org.saturnclient.saturnclient.auth;
-
-public class SaturnPlayer {
-    public String cloak = "";
-    public String hat = "";
-
-    public SaturnPlayer(String cloak, String hat) {
-        this.cloak = cloak;
-        this.hat = hat;
-    }
-}

src/main/java/org/saturnclient/saturnclient/config/ConfigManager.java

@@ -1,200 +0,0 @@
-package org.saturnclient.saturnclient.config;
-
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
-import com.google.gson.JsonPrimitive;
-import java.io.File;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.util.HashMap;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import net.minecraft.client.MinecraftClient;
-import org.saturnclient.saturnclient.SaturnClient;
-
-public class ConfigManager {
-
-    private static File configFile = new File(
-            MinecraftClient.getInstance().runDirectory,
-            "saturn.json");
-    private static Map<String, Map<String, Property<?>>> properties = new HashMap<>();
-
-    private Map<String, Property<?>> currentMap;
-
-    public ConfigManager(String namespace) {
-        currentMap = new LinkedHashMap<>();
-        properties.put(namespace, currentMap);
-    }
-
-    public ConfigManager(ConfigManager config, String namespace) {
-        currentMap = new LinkedHashMap<>();
-        Property<Map<String, Property<?>>> namespaceProperty = new Property<>(currentMap,
-                Property.PropertyType.NAMESPACE);
-        config.property(namespace, namespaceProperty);
-        // Update the parent's state
-        config.currentMap.put(namespace, namespaceProperty);
-    }
-
-    // Generic method to store any type of property
-    public <T> Property<T> property(String name, Property<T> value) {
-        currentMap.put(name, value);
-        return value;
-    }
-
-    public static void load() {
-        try {
-            SaturnClient.LOGGER.info("Starting to load config...");
-            if (!configFile.exists()) {
-                configFile.createNewFile();
-                Files.write(configFile.toPath(), "{}".getBytes());
-            }
-
-            JsonObject jsonObject = JsonParser.parseString(
-                    new String(Files.readAllBytes(configFile.toPath()))).getAsJsonObject();
-
-            for (String namespace : properties.keySet()) {
-                JsonElement configElement = jsonObject.get(namespace);
-
-                if (configElement == null)
-                    continue;
-
-                JsonObject config = jsonObject.get(namespace).getAsJsonObject();
-
-                if (config == null) {
-                    continue;
-                }
-
-                Map<String, Property<?>> propertyMap = properties.get(namespace);
-                loadProperties(config, propertyMap);
-            }
-        } catch (IOException e) {
-            SaturnClient.LOGGER.error("Error reading the config file", e);
-        }
-    }
-
-    @SuppressWarnings("unchecked")
-    private static void loadProperties(JsonObject config, Map<String, Property<?>> propertyMap) {
-        for (String propertyName : propertyMap.keySet()) {
-            JsonElement c = config.get(propertyName);
-
-            if (c == null) {
-                continue;
-            }
-
-            Property<?> p = propertyMap.get(propertyName);
-            if (p.matchesJson(c)) {
-                if (p.getType() == Property.PropertyType.NAMESPACE) {
-                    // Handle nested namespace
-                    JsonObject nestedConfig = c.getAsJsonObject();
-                    Map<String, Property<?>> nestedProperties = p.getNamespaceValue();
-                    loadProperties(nestedConfig, nestedProperties);
-                } else {
-                    // Handle regular properties
-                    switch (p.getType()) {
-                        case BOOLEAN:
-                            ((Property<Boolean>) p).value = c.getAsBoolean();
-                            break;
-                        case INTEGER:
-                            ((Property<Integer>) p).value = c.getAsInt();
-                            break;
-                        case FLOAT:
-                            ((Property<Float>) p).value = c.getAsFloat();
-                            break;
-                        case STRING:
-                            ((Property<String>) p).value = c.getAsString();
-                            break;
-                        case HEX:
-                            ((Property<Integer>) p).value = c.getAsInt();
-                            break;
-                        default:
-                            break;
-                    }
-                }
-            } else {
-                SaturnClient.LOGGER.warn(
-                        "Property does not match JSON: " + propertyName);
-            }
-        }
-    }
-
-    public static void save() {
-        try {
-            SaturnClient.LOGGER.info("Starting to save config...");
-
-            JsonObject jsonObject = new JsonObject();
-
-            // Iterate through all namespaces and their properties
-            for (String namespace : properties.keySet()) {
-                JsonObject namespaceConfig = new JsonObject();
-                Map<String, Property<?>> propertyMap = properties.get(namespace);
-
-                // Save properties for this namespace
-                saveProperties(namespaceConfig, propertyMap);
-
-                // Add the namespace config to the main JSON object
-                jsonObject.add(namespace, namespaceConfig);
-            }
-
-            // Format the json so it can easily be edited
-            Gson gson = new GsonBuilder().setPrettyPrinting().create();
-            String formattedJson = gson.toJson(jsonObject);
-
-            // Write the JSON object to the config file
-            Files.write(configFile.toPath(), formattedJson.getBytes());
-            SaturnClient.LOGGER.info("Config saved successfully.");
-        } catch (IOException e) {
-            SaturnClient.LOGGER.error("Error saving the config file", e);
-        }
-    }
-
-    @SuppressWarnings("unchecked")
-    private static void saveProperties(JsonObject config, Map<String, Property<?>> propertyMap) {
-        // Iterate through each property in the namespace
-        for (String propertyName : propertyMap.keySet()) {
-            Property<?> property = propertyMap.get(propertyName);
-            JsonElement propertyValue = null;
-
-            if (property.getType() == Property.PropertyType.NAMESPACE) {
-                // Handle nested namespace
-                JsonObject nestedConfig = new JsonObject();
-                Map<String, Property<?>> nestedProperties = (Map<String, Property<?>>) property.value;
-                saveProperties(nestedConfig, nestedProperties);
-                propertyValue = nestedConfig;
-            } else {
-                // Convert the property value based on its type
-                switch (property.getType()) {
-                    case BOOLEAN:
-                        propertyValue = new JsonPrimitive((Boolean) property.value);
-                        break;
-                    case INTEGER:
-                        propertyValue = new JsonPrimitive((Integer) property.value);
-                        break;
-                    case FLOAT:
-                        propertyValue = new JsonPrimitive((Float) property.value);
-                        break;
-                    case STRING:
-                        propertyValue = new JsonPrimitive((String) property.value);
-                        break;
-                    case HEX:
-                        propertyValue = new JsonPrimitive((Integer) property.value);
-                        break;
-                    default:
-                        SaturnClient.LOGGER.warn(
-                                "Unknown property type for: " + propertyName);
-                        break;
-                }
-            }
-
-            if (propertyValue != null) {
-                config.add(propertyName, propertyValue);
-            }
-        }
-    }
-
-    public Map<String, Property<?>> getProperties() {
-        return currentMap;
-    }
-}

src/main/java/org/saturnclient/saturnclient/config/Property.java

@@ -1,142 +0,0 @@
-package org.saturnclient.saturnclient.config;
-
-import java.util.Map;
-
-import com.google.gson.JsonElement;
-import com.google.gson.JsonPrimitive;
-
-public class Property<T> {
-
-    public enum PropertyType {
-        BOOLEAN,
-        INTEGER,
-        FLOAT,
-        STRING,
-        HEX,
-        NAMESPACE
-    }
-
-    public T value;
-    public boolean isReset = false;
-    private T defaultValue;
-    private PropertyType type;
-
-    public Property(T value) {
-        this.value = value;
-        this.defaultValue = value;
-        if (value instanceof Boolean) {
-            type = PropertyType.BOOLEAN;
-        } else if (value instanceof Integer) {
-            type = PropertyType.INTEGER;
-        } else if (value instanceof Float) {
-            type = PropertyType.FLOAT;
-        } else if (value instanceof String) {
-            type = PropertyType.STRING;
-        } else if (valueIsNamespace(value)) {
-            type = PropertyType.NAMESPACE;
-        }
-    }
-
-    public Property(T value, PropertyType type) {
-        this.value = value;
-        this.defaultValue = value;
-        this.type = type;
-    }
-
-    public boolean getBool() {
-        if (value instanceof Boolean) {
-            return (boolean) value;
-        }
-        throw new IllegalStateException("Property does not contain a boolean");
-    }
-
-    public int getInt() {
-        if (value instanceof Integer) {
-            return (int) value;
-        }
-        throw new IllegalStateException("Property does not contain an int");
-    }
-
-    public float getFloat() {
-        if (value instanceof Float) {
-            return (float) value;
-        }
-        throw new IllegalStateException("Property does not contain a float");
-    }
-
-    public String getString() {
-        if (value instanceof String) {
-            return (String) value;
-        }
-        throw new IllegalStateException("Property does not contain a string");
-    }
-
-    public void reset() {
-        value = defaultValue;
-        isReset = true;
-    }
-
-    public int getHexString() {
-        if (value instanceof String) {
-            String str = (String) value;
-            if (str.startsWith("0x") || str.startsWith("0X")) {
-                try {
-                    return Integer.parseInt(str.substring(2), 16);
-                } catch (NumberFormatException e) {
-                    throw new IllegalStateException(
-                            "Invalid hexadecimal integer format");
-                }
-            }
-        }
-        throw new IllegalStateException(
-                "Property does not contain a valid hex integer");
-    }
-
-    public PropertyType getType() {
-        return type;
-    }
-
-    @SuppressWarnings("unchecked")
-    public Map<String, Property<?>> getNamespaceValue() {
-        if (type == PropertyType.NAMESPACE && value instanceof Map) {
-            return (Map<String, Property<?>>) value;
-        }
-        throw new IllegalStateException("Property is not a namespace");
-    }
-
-    public boolean matchesJson(JsonElement element) {
-        if (element.isJsonPrimitive()) {
-            JsonPrimitive primitive = element.getAsJsonPrimitive();
-            if (value instanceof Boolean && primitive.isBoolean())
-                return true;
-            if (value instanceof Integer && primitive.isNumber())
-                return true;
-            if (value instanceof Float && primitive.isNumber())
-                return true;
-            if (value instanceof String && primitive.isString())
-                return true;
-
-            // Check if JSON string represents a valid hex integer
-            if (value instanceof String && primitive.isString()) {
-                String str = primitive.getAsString();
-                return str.matches("0x[0-9A-Fa-f]+");
-            }
-        } else if (element.isJsonObject()) {
-            return isNamespace(value);
-        }
-        return false;
-    }
-
-    @Override
-    public String toString() {
-        return String.valueOf(value);
-    }
-
-    public boolean isNamespace(Object obj) {
-        return type == PropertyType.NAMESPACE && value instanceof Map;
-    }
-
-    public static boolean valueIsNamespace(Object obj) {
-        return obj instanceof Map;
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/CloakFeatureRenderer.java

@@ -1,84 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics;
-
-import org.saturnclient.saturnclient.auth.Auth;
-import org.saturnclient.saturnclient.cosmetics.cloaks.Cloaks;
-
-import net.minecraft.client.render.OverlayTexture;
-import net.minecraft.client.render.RenderLayer;
-import net.minecraft.client.render.VertexConsumer;
-import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.render.entity.equipment.EquipmentModel;
-import net.minecraft.client.render.entity.equipment.EquipmentModelLoader;
-import net.minecraft.client.render.entity.equipment.EquipmentModel.LayerType;
-import net.minecraft.client.render.entity.feature.FeatureRenderer;
-import net.minecraft.client.render.entity.feature.FeatureRendererContext;
-import net.minecraft.client.render.entity.model.BipedEntityModel;
-import net.minecraft.client.render.entity.model.EntityModelLayers;
-import net.minecraft.client.render.entity.model.LoadedEntityModels;
-import net.minecraft.client.render.entity.model.PlayerCapeModel;
-import net.minecraft.client.render.entity.model.PlayerEntityModel;
-import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
-import net.minecraft.client.util.SkinTextures;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.component.DataComponentTypes;
-import net.minecraft.component.type.EquippableComponent;
-import net.minecraft.item.ItemStack;
-import net.minecraft.item.equipment.EquipmentAsset;
-import net.minecraft.registry.RegistryKey;
-import net.minecraft.util.Identifier;
-
-public class CloakFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState, PlayerEntityModel> {
-    private final BipedEntityModel<PlayerEntityRenderState> model;
-    private final EquipmentModelLoader equipmentModelLoader;
-
-    public CloakFeatureRenderer(FeatureRendererContext<PlayerEntityRenderState, PlayerEntityModel> context,
-            LoadedEntityModels modelLoader, EquipmentModelLoader equipmentModelLoader) {
-        super(context);
-        this.model = new PlayerCapeModel<PlayerEntityRenderState>(
-                modelLoader.getModelPart(EntityModelLayers.PLAYER_CAPE));
-        this.equipmentModelLoader = equipmentModelLoader;
-    }
-
-    private boolean hasCustomModelForLayer(ItemStack stack, EquipmentModel.LayerType layerType) {
-        EquippableComponent equippableComponent = (EquippableComponent) stack.get(DataComponentTypes.EQUIPPABLE);
-        if (equippableComponent != null && !equippableComponent.assetId().isEmpty()) {
-            EquipmentModel equipmentModel = this.equipmentModelLoader
-                    .get((RegistryKey<EquipmentAsset>) equippableComponent.assetId().get());
-            return !equipmentModel.getLayers(layerType).isEmpty();
-        } else {
-            return false;
-        }
-    }
-
-    public void render(MatrixStack matrixStack, VertexConsumerProvider vertexConsumerProvider, int i,
-            PlayerEntityRenderState playerEntityRenderState, float f, float g) {
-        if (!playerEntityRenderState.invisible && playerEntityRenderState.capeVisible) {
-            SkinTextures skinTextures = playerEntityRenderState.skinTextures;
-
-            if (skinTextures.capeTexture() == null) {
-                String name = playerEntityRenderState.name;
-                String uuid = Auth.playerNames.get(name);
-                if (uuid == null || !Auth.players.containsKey(uuid)) {
-                    return;
-                }
-
-                Identifier customCape = Cloaks.getCurrentCloakTexture(uuid);
-
-                if (customCape != null
-                        && !this.hasCustomModelForLayer(playerEntityRenderState.equippedChestStack, LayerType.WINGS)) {
-                    matrixStack.push();
-                    if (this.hasCustomModelForLayer(playerEntityRenderState.equippedChestStack, LayerType.HUMANOID)) {
-                        matrixStack.translate(0.0F, -0.053125F, 0.06875F);
-                    }
-
-                    VertexConsumer vertexConsumer = vertexConsumerProvider
-                            .getBuffer(RenderLayer.getEntityAlpha(customCape));
-                    ((PlayerEntityModel) this.getContextModel()).copyTransforms(this.model);
-                    this.model.setAngles(playerEntityRenderState);
-                    this.model.render(matrixStack, vertexConsumer, 0xF000F0, OverlayTexture.DEFAULT_UV);
-                    matrixStack.pop();
-                }
-            }
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/HatFeatureRenderer.java

@@ -1,66 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics;
-
-import org.saturnclient.saturnclient.auth.SaturnPlayer;
-import org.saturnclient.saturnclient.auth.Auth;
-
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.render.OverlayTexture;
-import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.render.entity.feature.FeatureRenderer;
-import net.minecraft.client.render.entity.feature.FeatureRendererContext;
-import net.minecraft.client.render.entity.model.PlayerEntityModel;
-import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
-import net.minecraft.client.render.item.ItemRenderer;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.component.DataComponentTypes;
-import net.minecraft.component.type.EquippableComponent;
-import net.minecraft.entity.EquipmentSlot;
-import net.minecraft.item.ItemStack;
-import net.minecraft.item.Items;
-import net.minecraft.item.ModelTransformationMode;
-import net.minecraft.util.Identifier;
-
-public class HatFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState, PlayerEntityModel> {
-    public HatFeatureRenderer(FeatureRendererContext<PlayerEntityRenderState, PlayerEntityModel> context) {
-        super(context);
-    }
-
-    @Override
-    public void render(MatrixStack matrices, VertexConsumerProvider vertexConsumers, int light,
-            PlayerEntityRenderState state, float limbAngle, float limbDistance) {
-        ItemStack headItem = state.equippedHeadStack;
-        String uuid = Auth.playerNames.get(state.name);
-        if (headItem.isEmpty() && uuid != null) {
-            SaturnPlayer player = Auth.players.get(uuid);
-            if (player == null || player.hat == null || player.hat.isEmpty()) {
-                return;
-            }
-
-            matrices.push();
-
-            this.getContextModel().head.rotate(matrices);
-            matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_X.rotationDegrees(180.0f));
-            matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_Y.rotationDegrees(180.0f));
-
-            ItemStack customHat = new ItemStack(Items.STICK);
-            customHat.set(DataComponentTypes.ITEM_MODEL,
-                    Identifier.of("saturnclient:hat_" + player.hat));
-            customHat.set(DataComponentTypes.EQUIPPABLE,
-                    EquippableComponent.builder(EquipmentSlot.HEAD).build());
-
-            ItemRenderer itemRenderer = MinecraftClient.getInstance().getItemRenderer();
-
-            itemRenderer.renderItem(
-                    customHat,
-                    ModelTransformationMode.THIRD_PERSON_RIGHT_HAND,
-                    light,
-                    OverlayTexture.DEFAULT_UV,
-                    matrices,
-                    vertexConsumers,
-                    null,
-                    0);
-
-            matrices.pop();
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/Hats.java

@@ -1,29 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics;
-
-import java.util.ArrayList;
-import java.util.List;
-import org.saturnclient.saturnclient.auth.SaturnPlayer;
-import org.saturnclient.saturnclient.auth.Auth;
-
-public class Hats {
-    public static List<String> availableHats = new ArrayList<>();
-
-    public static void initialize() {
-        availableHats.add(0, "");
-    }
-
-    public static void setHat(String uuid, String hatName) {
-        setHatSilent(uuid, hatName);
-        Auth.setHat(hatName);
-        Auth.sendReload();
-    }
-
-    public static void setHatSilent(String uuid, String hatName) {
-        SaturnPlayer player = Auth.players.get(uuid);
-        if (player == null) {
-            Auth.players.put(uuid, new SaturnPlayer("", hatName));
-        } else {
-            player.hat = hatName;
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/cloaks/Cloaks.java

@@ -1,196 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics.cloaks;
-
-import net.minecraft.util.Identifier;
-import org.saturnclient.saturnclient.auth.Auth;
-import org.saturnclient.saturnclient.cosmetics.cloaks.utils.AnimatedCloakData;
-import org.saturnclient.saturnclient.cosmetics.cloaks.utils.IdentifierUtils;
-import org.saturnclient.saturnclient.auth.SaturnPlayer;
-
-import javax.imageio.ImageIO;
-import java.awt.image.BufferedImage;
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
-import org.saturnclient.saturnclient.SaturnClient;
-
-/**
- * Manages the cloak system for Saturn Client.
- * Handles loading and caching of player cloaks.
- * Originally created by IIpho3nix and modified for Saturn Client by leo.
- */
-public class Cloaks {
-    private static final String[] ANIMATED_CLOAKS = { "glitch" };
-
-    private static final String CLOAKS_RESOURCE_PATH = "assets/saturnclient/textures/cloaks/";
-    public static final List<String> availableCloaks = new ArrayList<>();
-    public static Identifier cloakCacheIdentifier = null;
-    public static final Map<String, List<AnimatedCloakData>> animatedCloaks = new ConcurrentHashMap<>();
-    private static final Map<String, Long> lastFrameTime = new ConcurrentHashMap<>();
-
-    /**
-     * Initializes the cloak system.
-     * Loads cloak textures from resources.
-     */
-    public static void initialize() {
-        availableCloaks.add(0, "");
-    }
-
-    /**
-     * Handles loading and caching of a new cloak texture.
-     * 
-     * @param cloakName Name of the cloak file to load
-     */
-    public static void setCloak(String uuid, String cloakName) {
-        Auth.setCloak(cloakName);
-        setCloakSilent(uuid, cloakName);
-        Auth.sendReload();
-        SaturnClient.LOGGER.info("Cloak set to " + cloakName);
-    }
-
-    /**
-     * Handles loading and caching of a new cloak texture, without connecting to the
-     * server.
-     * 
-     * @param cloakName Name of the cloak file to load
-     */
-    public static void setCloakSilent(String uuid, String cloakName) {
-        SaturnPlayer player = Auth.players.get(uuid);
-        if (player == null) {
-            Auth.players.put(uuid, new SaturnPlayer(cloakName, null));
-        } else {
-            player.cloak = cloakName;
-        }
-
-        loadCloak(uuid);
-    }
-
-    /**
-     * Handles loading and caching of a new cloak texture, without connecting to the
-     * server.
-     * 
-     * @param cloakName Name of the cloak file to load
-     */
-    public static void loadCloak(String uuid) {
-        SaturnPlayer player = Auth.players.get(uuid);
-        if (player != null && player.cloak != null) {
-            if (!player.cloak.isEmpty()) {
-                if (Arrays.asList(ANIMATED_CLOAKS).contains(player.cloak)) {
-                    // Load animated cloak data in background thread
-                    new Thread(() -> {
-                        try {
-                            String fileName = player.cloak + ".gif";
-                            String resourcePath = CLOAKS_RESOURCE_PATH + fileName;
-                            InputStream inputStream = Cloaks.class.getClassLoader().getResourceAsStream(resourcePath);
-
-                            if (inputStream != null) {
-                                byte[] data = inputStream.readAllBytes();
-                                GifDecoder.GifImage gif = GifDecoder.read(data);
-                                List<BufferedImage> frames = new ArrayList<>();
-                                List<Integer> delays = new ArrayList<>();
-                                int frameCount = gif.getFrameCount();
-
-                                for (int i = 0; i < frameCount; i++) {
-                                    frames.add(gif.getFrame(i));
-                                    delays.add(gif.getDelay(i) * 10);
-                                }
-
-                                // Register textures on main thread
-                                net.minecraft.client.MinecraftClient.getInstance().execute(() -> {
-                                    try {
-                                        List<AnimatedCloakData> animatedFrames = new ArrayList<>();
-                                        for (int i = 0; i < frameCount; i++) {
-                                            String frameId = fileName.replace(".gif", "") + "_frame_" + i;
-                                            Identifier frameIdentifier = Identifier.of(SaturnClient.MOD_ID, "cloaks_" + frameId);
-                                            IdentifierUtils.registerBufferedImageTexture(frameIdentifier, frames.get(i));
-                                            animatedFrames.add(new AnimatedCloakData(frameIdentifier, delays.get(i)));
-                                        }
-                                        animatedCloaks.put(uuid, animatedFrames);
-                                        lastFrameTime.put(uuid, System.currentTimeMillis());
-                                        SaturnClient.LOGGER.info("Loaded " + frames.size() + " frames for animated cloak: " + fileName);
-                                    } catch (Exception e) {
-                                        SaturnClient.LOGGER.error("Failed to register animated cloak textures: " + fileName, e);
-                                    }
-                                });
-                            }
-                        } catch (IOException e) {
-                            SaturnClient.LOGGER.error("Failed to load animated cloak from resources: " + player.cloak + ".gif", e);
-                        }
-                    }).start();
-                } else {
-                    net.minecraft.client.MinecraftClient.getInstance().execute(() -> loadStaticCloak(player.cloak + ".png"));
-                }
-            }
-        }
-    }
-
-    /**
-     * Loads and processes a static cloak from a PNG file in resources.
-     * 
-     * @param fileName Name of the PNG file to load
-     */
-    private static void loadStaticCloak(String fileName) {
-        try {
-            String resourcePath = CLOAKS_RESOURCE_PATH + fileName;
-            InputStream inputStream = Cloaks.class.getClassLoader().getResourceAsStream(resourcePath);
-
-            if (inputStream != null) {
-                BufferedImage image = ImageIO.read(inputStream);
-
-                // Add debug logging for static cloak
-                SaturnClient.LOGGER.info("Static cloak dimensions: " + image.getWidth() + "x" + image.getHeight());
-
-                String safeFileName = fileName.toLowerCase(Locale.ROOT)
-                        .replace(' ', '_')
-                        .replaceAll("[^a-z0-9/._-]", "");
-
-                cloakCacheIdentifier = Identifier.of(SaturnClient.MOD_ID, "cloaks_" + safeFileName);
-                IdentifierUtils.registerBufferedImageTexture(cloakCacheIdentifier, image);
-            }
-        } catch (IOException e) {
-            SaturnClient.LOGGER.error("Failed to load static cloak from resources: " + fileName, e);
-        }
-    }
-
-    public static Identifier getCurrentCloakTexture(String uuid) {
-        if (!Auth.players.containsKey(uuid)) {
-            return null;
-        }
-
-        String cloakName = Auth.players.get(uuid).cloak;
-
-        if (cloakName.isEmpty()) {
-            return null;
-        }
-
-        if (Arrays.asList(ANIMATED_CLOAKS).contains(cloakName)) {
-            List<AnimatedCloakData> frames = animatedCloaks.get(uuid);
-            if (frames == null || frames.isEmpty()) {
-                return null;
-            }
-
-            long currentTime = System.currentTimeMillis();
-            long lastTime = lastFrameTime.getOrDefault(uuid, currentTime);
-            int currentFrame = 0;
-
-            long elapsedTime = currentTime - lastTime;
-            long totalTime = 0;
-            for (int i = 0; i < frames.size(); i++) {
-                totalTime += frames.get(i).getDelayMs();
-                if (elapsedTime < totalTime) {
-                    currentFrame = i;
-                    break;
-                }
-            }
-
-            if (elapsedTime >= totalTime) {
-                lastFrameTime.put(uuid, currentTime);
-                currentFrame = 0;
-            }
-
-            return frames.get(currentFrame).getTextureId();
-        } else {
-            return Identifier.of(SaturnClient.MOD_ID, "textures/cloaks/" + cloakName + ".png");
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/cloaks/GifDecoder.java

@@ -1,674 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics.cloaks;
-
-import java.awt.*;
-import java.awt.image.BufferedImage;
-import java.awt.image.DataBufferInt;
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.ArrayList;
-import java.util.List;
-
-import static java.lang.System.arraycopy;
-
-/*
- * Copyright 2014 Dhyan Blum
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * <p>
- * A decoder capable of processing a GIF data stream to render the graphics
- * contained in it. This implementation follows the official
- * <A HREF="http://www.w3.org/Graphics/GIF/spec-gif89a.txt">GIF
- * specification</A>.
- * </p>
- *
- * <p>
- * Example usage:
- * </p>
- *
- * <p>
- *
- * <pre>
- * final GifImage gifImage = GifDecoder.read(int[] data);
- * final int width = gifImage.getWidth();
- * final int height = gifImage.getHeight();
- * final int frameCount = gifImage.getFrameCount();
- * for (int i = 0; i < frameCount; i++) {
- * 	final BufferedImage image = gifImage.getFrame(i);
- * 	final int delay = gif.getDelay(i);
- * }
- * </pre>
- *
- * </p>
- *
- * @author Dhyan Blum
- * @version 1.09 November 2017
- */
-public final class GifDecoder {
-    static final class BitReader {
-        private int nextBitToRead;
-        private int numberOfBitsToRead;
-        private int bitMask; // Used to kill unwanted higher bits
-        private byte[] bytes; // Data array
-
-        // To avoid costly bounds checks, 'in' needs 2 more 0-bytes at the end
-        private void init(final byte[] bytes) {
-            this.bytes = bytes;
-            nextBitToRead = 0;
-        }
-
-        private int read() {
-            // Byte indices: (bitPos / 8), (bitPos / 8) + 1, (bitPos / 8) + 2
-            int byteIndex = nextBitToRead >>> 3; // Byte = bit / 8
-            int bitsToShiftRight = nextBitToRead & 7; // & 7 is the same as MODULO 8
-            int byte0, byte1, byte2;
-            byte0 = bytes[byteIndex++] & 0xFF; // & 0xFF gives us the unsigned values
-            byte1 = bytes[byteIndex++] & 0xFF;
-            byte2 = bytes[byteIndex] & 0xFF;
-            // Glue the bytes together, don't do more shifting than necessary
-            int buffer = ((byte2 << 8 | byte1) << 8 | byte0) >>> bitsToShiftRight;
-            nextBitToRead += numberOfBitsToRead;
-            return buffer & bitMask; // Kill the unwanted higher bits
-        }
-
-        private void setNumberOfBitsToRead(final int numberOfBitsToRead) {
-            this.numberOfBitsToRead = numberOfBitsToRead;
-            bitMask = (1 << numberOfBitsToRead) - 1;
-        }
-    }
-
-    static final class CodeTable {
-        private final int[][] table; // Maps codes to lists of colors
-        private int initTableSize; // Number of colors +2 for CLEAR + EOI
-        private int initCodeSize; // Initial code size
-        private int initCodeLimit; // First code limit
-        private int codeSize; // Current code size, maximum is 12 bits
-        private int nextCode; // Next available code for a new entry
-        private int nextCodeLimit; // Increase codeSize when nextCode == limit
-        private BitReader bitReader; // Notify when code sizes increases
-
-        public CodeTable() {
-            table = new int[4096][1];
-        }
-
-        private int add(final int[] indices) {
-            if (nextCode < 4096) {
-                if (nextCode == nextCodeLimit && codeSize < 12) {
-                    codeSize++; // Max code size is 12
-                    bitReader.setNumberOfBitsToRead(codeSize);
-                    nextCodeLimit = (1 << codeSize) - 1; // 2^codeSize - 1
-                }
-                table[nextCode++] = indices;
-            }
-            return codeSize;
-        }
-
-        private int clear() {
-            codeSize = initCodeSize;
-            bitReader.setNumberOfBitsToRead(codeSize);
-            nextCodeLimit = initCodeLimit;
-            nextCode = initTableSize; // Don't recreate table, reset pointer
-            return codeSize;
-        }
-
-        private void init(final GifFrame fr, final int[] activeColTbl, final BitReader br) {
-            this.bitReader = br;
-            final int numColors = activeColTbl.length;
-            initCodeSize = fr.firstCodeSize;
-            initCodeLimit = (1 << initCodeSize) - 1; // 2^initCodeSize - 1
-            initTableSize = fr.endOfInfoCode + 1;
-            nextCode = initTableSize;
-            for (int c = numColors - 1; c >= 0; c--) {
-                table[c][0] = activeColTbl[c]; // Translated color
-            } // A gap may follow with no colors assigned if numCols < CLEAR
-            table[fr.clearCode] = new int[] { fr.clearCode }; // CLEAR
-            table[fr.endOfInfoCode] = new int[] { fr.endOfInfoCode }; // EOI
-            // Locate transparent color in code table and set to 0
-            if (fr.transpColFlag && fr.transpColIndex < numColors) {
-                table[fr.transpColIndex][0] = 0;
-            }
-        }
-    }
-
-    final class GifFrame {
-        // Graphic control extension (optional)
-        // Disposal: 0=NO_ACTION, 1=NO_DISPOSAL, 2=RESTORE_BG, 3=RESTORE_PREV
-        private int disposalMethod; // 0-3 as above, 4-7 undefined
-        private boolean transpColFlag; // 1 Bit
-        private int delay; // Unsigned, LSByte first, n * 1/100 * s
-        private int transpColIndex; // 1 Byte
-        // Image descriptor
-        private int x; // Position on the canvas from the left
-        private int y; // Position on the canvas from the top
-        private int w; // May be smaller than the base image
-        private int h; // May be smaller than the base image
-        private int wh; // width * height
-        private boolean hasLocColTbl; // Has local color table? 1 Bit
-        private boolean interlaceFlag; // Is an interlace image? 1 Bit
-        @SuppressWarnings("unused")
-        private boolean sortFlag; // True if local colors are sorted, 1 Bit
-        private int sizeOfLocColTbl; // Size of the local color table, 3 Bits
-        private int[] localColTbl; // Local color table (optional)
-        // Image data
-        private int firstCodeSize; // LZW minimum code size + 1 for CLEAR & EOI
-        private int clearCode;
-        private int endOfInfoCode;
-        private byte[] data; // Holds LZW encoded data
-        private BufferedImage img; // Full drawn image, not just the frame area
-    }
-
-    public final class GifImage {
-        public String header; // Bytes 0-5, GIF87a or GIF89a
-        private int w; // Unsigned 16 Bit, the least significant byte first
-        private int h; // Unsigned 16 Bit, the least significant byte first
-        private int wh; // Image width * image height
-        public boolean hasGlobColTbl; // 1 Bit
-        public int colorResolution; // 3 Bits
-        public boolean sortFlag; // True if global colors are sorted, 1 Bit
-        public int sizeOfGlobColTbl; // 2^(val(3 Bits) + 1), see spec
-        public int bgColIndex; // Background color index, 1 Byte
-        public int pxAspectRatio; // Pixel aspect ratio, 1 Byte
-        public int[] globalColTbl; // Global color table
-        private final List<GifFrame> frames = new ArrayList<GifFrame>(64);
-        public String appId = ""; // 8 Bytes at in[i+3], usually "NETSCAPE"
-        public String appAuthCode = ""; // 3 Bytes at in[i+11], usually "2.0"
-        public int repetitions = 0; // 0: infinite loop, N: number of loops
-        private BufferedImage img = null; // Currently, drawn frame
-        private final BitReader bits = new BitReader();
-        private final CodeTable codes = new CodeTable();
-        private Graphics2D g;
-
-        private int[] decode(final GifFrame fr, final int[] activeColTbl) {
-            codes.init(fr, activeColTbl, bits);
-            bits.init(fr.data); // Incoming codes
-            final int clearCode = fr.clearCode, endCode = fr.endOfInfoCode;
-            final int[] out = new int[wh]; // Target image pixel array
-            final int[][] tbl = codes.table; // Code table
-            int outPos = 0; // Next pixel position in the output image array
-            codes.clear(); // Init code table
-            bits.read(); // Skip leading clear code
-            int code = bits.read(); // Read first code
-            int[] pixels = tbl[code]; // Output pixel for first code
-            arraycopy(pixels, 0, out, outPos, pixels.length);
-            outPos += pixels.length;
-            try {
-                while (true) {
-                    final int prevCode = code;
-                    code = bits.read(); // Get next code in stream
-                    if (code == clearCode) { // After a CLEAR table, there is
-                        codes.clear(); // no previous code, we need to read
-                        code = bits.read(); // a new one
-                        pixels = tbl[code]; // Output pixels
-                        arraycopy(pixels, 0, out, outPos, pixels.length);
-                        outPos += pixels.length;
-                        continue; // Back to the loop with a valid previous code
-                    } else if (code == endCode) {
-                        break;
-                    }
-                    final int[] prevVals = tbl[prevCode];
-                    final int[] prevValsAndK = new int[prevVals.length + 1];
-                    arraycopy(prevVals, 0, prevValsAndK, 0, prevVals.length);
-                    if (code < codes.nextCode) { // Code table contains code
-                        pixels = tbl[code]; // Output pixels
-                        arraycopy(pixels, 0, out, outPos, pixels.length);
-                        outPos += pixels.length;
-                        prevValsAndK[prevVals.length] = tbl[code][0]; // K
-                    } else {
-                        prevValsAndK[prevVals.length] = prevVals[0]; // K
-                        arraycopy(prevValsAndK, 0, out, outPos, prevValsAndK.length);
-                        outPos += prevValsAndK.length;
-                    }
-                    codes.add(prevValsAndK); // Previous indices + K
-                }
-            } catch (final ArrayIndexOutOfBoundsException ignored) {
-            }
-            return out;
-        }
-
-        private int[] deinterlace(final int[] src, final GifFrame fr) {
-            final int w = fr.w, h = fr.h, wh = fr.wh;
-            final int[] dest = new int[src.length];
-            // Interlaced images are organized in 4 sets of pixel lines
-            final int set2Y = (h + 7) >>> 3; // Line no. = ceil(h/8.0)
-            final int set3Y = set2Y + ((h + 3) >>> 3); // ceil(h-4/8.0)
-            final int set4Y = set3Y + ((h + 1) >>> 2); // ceil(h-2/4.0)
-            // Sets' start indices in source array
-            final int set2 = w * set2Y, set3 = w * set3Y, set4 = w * set4Y;
-            // Line skips in destination array
-            final int w2 = w << 1, w4 = w2 << 1, w8 = w4 << 1;
-            // Group 1 contains every 8th line starting from 0
-            int from = 0, to = 0;
-            for (; from < set2; from += w, to += w8) {
-                arraycopy(src, from, dest, to, w);
-            } // Group 2 contains every 8th line starting from 4
-            for (to = w4; from < set3; from += w, to += w8) {
-                arraycopy(src, from, dest, to, w);
-            } // Group 3 contains every 4th line starting from 2
-            for (to = w2; from < set4; from += w, to += w4) {
-                arraycopy(src, from, dest, to, w);
-            } // Group 4 contains every 2nd line starting from 1 (biggest group)
-            for (to = w; from < wh; from += w, to += w2) {
-                arraycopy(src, from, dest, to, w);
-            }
-            return dest; // All pixel lines have now been rearranged
-        }
-
-        private void drawFrame(final GifFrame fr) {
-            // Determine the color table that will be active for this frame
-            final int[] activeColTbl = fr.hasLocColTbl ? fr.localColTbl : globalColTbl;
-            // Get pixels from data stream
-            int[] pixels = decode(fr, activeColTbl);
-            if (fr.interlaceFlag) {
-                pixels = deinterlace(pixels, fr); // Rearrange pixel lines
-            }
-            // Create image of type 2=ARGB for frame area
-            final BufferedImage frame = new BufferedImage(fr.w, fr.h, 2);
-            arraycopy(pixels, 0, ((DataBufferInt) frame.getRaster().getDataBuffer()).getData(), 0, fr.wh);
-            // Draw frame area on top of working image
-            g.drawImage(frame, fr.x, fr.y, null);
-
-            // Visualize frame boundaries during testing
-            // if (DEBUG_MODE) {
-            // if (prev != null) {
-            // g.setColor(Color.RED); // Previous frame color
-            // g.drawRect(prev.x, prev.y, prev.w - 1, prev.h - 1);
-            // }
-            // g.setColor(Color.GREEN); // New frame color
-            // g.drawRect(fr.x, fr.y, fr.w - 1, fr.h - 1);
-            // }
-
-            // Keep a copy of the previous frame's pixels in case we need to restore the
-            // frame
-            int[] prevPx = new int[wh];
-            arraycopy(((DataBufferInt) img.getRaster().getDataBuffer()).getData(), 0, prevPx, 0, wh);
-
-            // Create another copy for the end user to not expose internal state
-            fr.img = new BufferedImage(w, h, 2); // 2 = ARGB
-            arraycopy(prevPx, 0, ((DataBufferInt) fr.img.getRaster().getDataBuffer()).getData(), 0, wh);
-
-            // Handle disposal of current frame
-            if (fr.disposalMethod == 2) {
-                // Restore to background color (clear frame area only)
-                g.clearRect(fr.x, fr.y, fr.w, fr.h);
-            } else if (fr.disposalMethod == 3) {
-                // Restore previous frame
-                arraycopy(prevPx, 0, ((DataBufferInt) img.getRaster().getDataBuffer()).getData(), 0, wh);
-            }
-        }
-
-        /**
-         * Returns the background color of the first frame in this GIF image. If
-         * the frame has a local color table, the returned color will be from
-         * that table. If not, the color will be from the global color table.
-         * Returns 0 if there is neither a local nor a global color table.
-         *
-         * @return 32 bit ARGB color in the form 0xAARRGGBB
-         */
-        public final int getBackgroundColor() {
-            final GifFrame frame = frames.get(0);
-            if (frame.hasLocColTbl) {
-                return frame.localColTbl[bgColIndex];
-            } else if (hasGlobColTbl) {
-                return globalColTbl[bgColIndex];
-            }
-            return 0;
-        }
-
-        /**
-         * If not 0, the delay specifies how many hundredths (1/100) of a second
-         * to wait before displaying the frame <i>after</i> the current frame.
-         *
-         * @param index Index of the current frame, 0 to N-1
-         * @return Delay as number of hundredths (1/100) of a second
-         */
-        public final int getDelay(final int index) {
-            return frames.get(index).delay;
-        }
-
-        /**
-         * @param index Index of the frame to return as image, starting from 0.
-         *              For incremental calls such as [0, 1, 2, ...] the method's
-         *              run time is O(1) as only one frame is drawn per call. For
-         *              random access calls such as [7, 12, ...] the run time is
-         *              O(N+1) with N being the number of previous frames that
-         *              need to be drawn before N+1 can be drawn on top. Once a
-         *              frame has been drawn it is being cached and the run time
-         *              is more or less O(0) to retrieve it from the list.
-         * @return A BufferedImage for the specified frame.
-         */
-        public BufferedImage getFrame(final int index) {
-            if (img == null) { // Init
-                img = new BufferedImage(w, h, 2); // 2 = ARGB
-                g = img.createGraphics();
-                g.setBackground(new Color(0, true)); // Transparent color
-            }
-            GifFrame fr = frames.get(index);
-            if (fr.img == null) {
-                // Draw all frames until and including the requested frame
-                for (int i = 0; i <= index; i++) {
-                    fr = frames.get(i);
-                    if (fr.img == null) {
-                        drawFrame(fr);
-                    }
-                }
-            }
-            return fr.img;
-        }
-
-        /**
-         * @return The number of frames contained in this GIF image
-         */
-        public final int getFrameCount() {
-            return frames.size();
-        }
-
-        /**
-         * @return The height of the GIF image
-         */
-        public final int getHeight() {
-            return h;
-        }
-
-        /**
-         * @return The width of the GIF image
-         */
-        public final int getWidth() {
-            return w;
-        }
-    }
-
-    static final boolean DEBUG_MODE = false;
-
-    /**
-     * @param in Raw image data as a byte[] array
-     * @return A GifImage object exposing the properties of the GIF image.
-     * @throws IOException If the image violates the GIF specification or is
-     *                     truncated.
-     */
-    public static GifImage read(final byte[] in) throws IOException {
-        final GifDecoder decoder = new GifDecoder();
-        final GifImage img = decoder.new GifImage();
-        GifFrame frame = null; // Currently open frame
-        int pos = readHeader(in, img); // Read header, get next byte position
-        pos = readLogicalScreenDescriptor(img, in, pos);
-        if (img.hasGlobColTbl) {
-            img.globalColTbl = new int[img.sizeOfGlobColTbl];
-            pos = readColTbl(in, img.globalColTbl, pos);
-        }
-        while (pos < in.length) {
-            final int block = in[pos] & 0xFF;
-            switch (block) {
-                case 0x21: // Extension introducer
-                    if (pos + 1 >= in.length) {
-                        throw new IOException("Unexpected end of file.");
-                    }
-                    switch (in[pos + 1] & 0xFF) {
-                        case 0xFE: // Comment extension
-                            pos = readTextExtension(in, pos);
-                            break;
-                        case 0xFF: // Application extension
-                            pos = readAppExt(img, in, pos);
-                            break;
-                        case 0x01: // Plain text extension
-                            frame = null; // End of current frame
-                            pos = readTextExtension(in, pos);
-                            break;
-                        case 0xF9: // Graphic control extension
-                            if (frame == null) {
-                                frame = decoder.new GifFrame();
-                                img.frames.add(frame);
-                            }
-                            pos = readGraphicControlExt(frame, in, pos);
-                            break;
-                        default:
-                            throw new IOException("Unknown extension at " + pos);
-                    }
-                    break;
-                case 0x2C: // Image descriptor
-                    if (frame == null) {
-                        frame = decoder.new GifFrame();
-                        img.frames.add(frame);
-                    }
-                    pos = readImgDescr(frame, in, pos);
-                    if (frame.hasLocColTbl) {
-                        frame.localColTbl = new int[frame.sizeOfLocColTbl];
-                        pos = readColTbl(in, frame.localColTbl, pos);
-                    }
-                    pos = readImgData(frame, in, pos);
-                    frame = null; // End of current frame
-                    break;
-                case 0x3B: // GIF Trailer
-                    return img; // Found trailer, finished reading.
-                default:
-                    // Unknown block. The image is corrupted. Strategies: a) Skip
-                    // and wait for a valid block. Experience: It'll get worse. b)
-                    // Throw exception. c) Return gracefully if we are almost done
-                    // processing. The frames we have so far should be error-free.
-                    final double progress = 1.0 * pos / in.length;
-                    if (progress < 0.9) {
-                        throw new IOException("Unknown block at: " + pos);
-                    }
-                    pos = in.length; // Exit loop
-            }
-        }
-        return img;
-    }
-
-    /**
-     * @param is Image data as input stream. This method will read from the
-     *           input stream's current position. It will not reset the
-     *           position before reading and won't reset or close the stream
-     *           afterwards. Call these methods before and after calling this
-     *           method as needed.
-     * @return A GifImage object exposing the properties of the GIF image.
-     * @throws IOException If an I/O error occurs, the image violates the GIF
-     *                     specification or the GIF is truncated.
-     */
-    public static GifImage read(final InputStream is) throws IOException {
-        final byte[] data = new byte[is.available()];
-        is.read(data, 0, data.length);
-        return read(data);
-    }
-
-    /**
-     * @param img GIF image
-     * @param in  Raw data
-     * @param i   Index of the first byte of the application extension
-     * @return Index of the first byte after this extension
-     */
-    static int readAppExt(final GifImage img, final byte[] in, int i) {
-        img.appId = new String(in, i + 3, 8); // should be "NETSCAPE"
-        img.appAuthCode = new String(in, i + 11, 3); // should be "2.0"
-        i += 14; // Go to sub-block size, it's value should be 3
-        final int subBlockSize = in[i] & 0xFF;
-        // The only app extension widely used is NETSCAPE, it's got 3 data bytes
-        if (subBlockSize == 3) {
-            // in[i+1] should have value 01, in[i+5] should be block terminator
-            img.repetitions = in[i + 2] & 0xFF | in[i + 3] & 0xFF << 8; // Short
-            return i + 5;
-        } // Skip unknown application extensions
-        while ((in[i] & 0xFF) != 0) { // While sub-block size != 0
-            i += (in[i] & 0xFF) + 1; // Skip to next sub-block
-        }
-        return i + 1;
-    }
-
-    /**
-     * @param in     Raw data
-     * @param colors Pre-initialized target array to store ARGB colors
-     * @param i      Index of the color table's first byte
-     * @return Index of the first byte after the color table
-     */
-    static int readColTbl(final byte[] in, final int[] colors, int i) {
-        final int numColors = colors.length;
-        for (int c = 0; c < numColors; c++) {
-            final int a = 0xFF; // Alpha 255 (opaque)
-            final int r = in[i++] & 0xFF; // 1st byte is red
-            final int g = in[i++] & 0xFF; // 2nd byte is green
-            final int b = in[i++] & 0xFF; // 3rd byte is blue
-            colors[c] = ((a << 8 | r) << 8 | g) << 8 | b;
-        }
-        return i;
-    }
-
-    /**
-     * @param fr GIF frame
-     * @param in Raw data
-     * @param i  Index of the extension introducer
-     * @return Index of the first byte after this block
-     */
-    static int readGraphicControlExt(final GifFrame fr, final byte[] in, final int i) {
-        fr.disposalMethod = (in[i + 3] & 0b00011100) >>> 2; // Bits 4-2
-        fr.transpColFlag = (in[i + 3] & 1) == 1; // Bit 0
-        fr.delay = in[i + 4] & 0xFF | (in[i + 5] & 0xFF) << 8; // 16 bit LSB
-        fr.transpColIndex = in[i + 6] & 0xFF; // Byte 6
-        return i + 8; // Skipped byte 7 (blockTerminator), as it's always 0x00
-    }
-
-    /**
-     * @param in  Raw data
-     * @param img The GifImage object that is currently read
-     * @return Index of the first byte after this block
-     * @throws IOException If the GIF header/trailer is missing, incomplete or
-     *                     unknown
-     */
-    static int readHeader(final byte[] in, final GifImage img) throws IOException {
-        if (in.length < 6) { // Check first 6 bytes
-            throw new IOException("Image is truncated.");
-        }
-        img.header = new String(in, 0, 6);
-        if (!img.header.equals("GIF87a") && !img.header.equals("GIF89a")) {
-            throw new IOException("Invalid GIF header.");
-        }
-        return 6;
-    }
-
-    /**
-     * @param fr The GIF frame to whom this image descriptor belongs
-     * @param in Raw data
-     * @param i  Index of the first byte of this block, i.e. the minCodeSize
-     * @return Byte index
-     */
-    static int readImgData(final GifFrame fr, final byte[] in, int i) {
-        final int fileSize = in.length;
-        final int minCodeSize = in[i++] & 0xFF; // Read code size, go to block
-        final int clearCode = 1 << minCodeSize; // CLEAR = 2^minCodeSize
-        fr.firstCodeSize = minCodeSize + 1; // Add 1 bit for CLEAR and EOI
-        fr.clearCode = clearCode;
-        fr.endOfInfoCode = clearCode + 1;
-        final int imgDataSize = readImgDataSize(in, i);
-        final byte[] imgData = new byte[imgDataSize + 2];
-        int imgDataPos = 0;
-        int subBlockSize = in[i] & 0xFF;
-        while (subBlockSize > 0) { // While block has data
-            try { // Next line may throw exception if sub-block size is fake
-                final int nextSubBlockSizePos = i + subBlockSize + 1;
-                final int nextSubBlockSize = in[nextSubBlockSizePos] & 0xFF;
-                arraycopy(in, i + 1, imgData, imgDataPos, subBlockSize);
-                imgDataPos += subBlockSize; // Move output data position
-                i = nextSubBlockSizePos; // Move to next sub-block size
-                subBlockSize = nextSubBlockSize;
-            } catch (final Exception e) {
-                // Sub-block exceeds file end, only use remaining bytes
-                subBlockSize = fileSize - i - 1; // Remaining bytes
-                arraycopy(in, i + 1, imgData, imgDataPos, subBlockSize);
-                imgDataPos += subBlockSize; // Move output data position
-                i += subBlockSize + 1; // Move to next sub-block size
-                break;
-            }
-        }
-        fr.data = imgData; // Holds LZW encoded data
-        i++; // Skip last sub-block size, should be 0
-        return i;
-    }
-
-    static int readImgDataSize(final byte[] in, int i) {
-        final int fileSize = in.length;
-        int imgDataPos = 0;
-        int subBlockSize = in[i] & 0xFF;
-        while (subBlockSize > 0) { // While block has data
-            try { // Next line may throw exception if sub-block size is fake
-                final int nextSubBlockSizePos = i + subBlockSize + 1;
-                final int nextSubBlockSize = in[nextSubBlockSizePos] & 0xFF;
-                imgDataPos += subBlockSize; // Move output data position
-                i = nextSubBlockSizePos; // Move to next sub-block size
-                subBlockSize = nextSubBlockSize;
-            } catch (final Exception e) {
-                // Sub-block exceeds file end, only use remaining bytes
-                subBlockSize = fileSize - i - 1; // Remaining bytes
-                imgDataPos += subBlockSize; // Move output data position
-                break;
-            }
-        }
-        return imgDataPos;
-    }
-
-    /**
-     * @param fr The GIF frame to whom this image descriptor belongs
-     * @param in Raw data
-     * @param i  Index of the image separator, i.e. the first block byte
-     * @return Index of the first byte after this block
-     */
-    static int readImgDescr(final GifFrame fr, final byte[] in, int i) {
-        fr.x = in[++i] & 0xFF | (in[++i] & 0xFF) << 8; // Byte 1-2: left
-        fr.y = in[++i] & 0xFF | (in[++i] & 0xFF) << 8; // Byte 3-4: top
-        fr.w = in[++i] & 0xFF | (in[++i] & 0xFF) << 8; // Byte 5-6: width
-        fr.h = in[++i] & 0xFF | (in[++i] & 0xFF) << 8; // Byte 7-8: height
-        fr.wh = fr.w * fr.h;
-        final byte b = in[++i]; // Byte 9 is a packed byte
-        fr.hasLocColTbl = (b & 0b10000000) >>> 7 == 1; // Bit 7
-        fr.interlaceFlag = (b & 0b01000000) >>> 6 == 1; // Bit 6
-        fr.sortFlag = (b & 0b00100000) >>> 5 == 1; // Bit 5
-        final int colTblSizePower = (b & 7) + 1; // Bits 2-0
-        fr.sizeOfLocColTbl = 1 << colTblSizePower; // 2^(N+1), As per the spec
-        return ++i;
-    }
-
-    /**
-     * @param img GIF image
-     * @param i   Start index of this block.
-     * @return Index of the first byte after this block.
-     */
-    static int readLogicalScreenDescriptor(final GifImage img, final byte[] in, final int i) {
-        img.w = in[i] & 0xFF | (in[i + 1] & 0xFF) << 8; // 16 bit, LSB 1st
-        img.h = in[i + 2] & 0xFF | (in[i + 3] & 0xFF) << 8; // 16 bit
-        img.wh = img.w * img.h;
-        final byte b = in[i + 4]; // Byte 4 is a packed byte
-        img.hasGlobColTbl = (b & 0b10000000) >>> 7 == 1; // Bit 7
-        final int colResPower = ((b & 0b01110000) >>> 4) + 1; // Bits 6-4
-        img.colorResolution = 1 << colResPower; // 2^(N+1), As per the spec
-        img.sortFlag = (b & 0b00001000) >>> 3 == 1; // Bit 3
-        final int globColTblSizePower = (b & 7) + 1; // Bits 0-2
-        img.sizeOfGlobColTbl = 1 << globColTblSizePower; // 2^(N+1), see spec
-        img.bgColIndex = in[i + 5] & 0xFF; // 1 Byte
-        img.pxAspectRatio = in[i + 6] & 0xFF; // 1 Byte
-        return i + 7;
-    }
-
-    /**
-     * @param in  Raw data
-     * @param pos Index of the extension introducer
-     * @return Index of the first byte after this block
-     */
-    static int readTextExtension(final byte[] in, final int pos) {
-        int i = pos + 2; // Skip extension introducer and label
-        int subBlockSize = in[i++] & 0xFF;
-        while (subBlockSize != 0 && i < in.length) {
-            i += subBlockSize;
-            subBlockSize = in[i++] & 0xFF;
-        }
-        return i;
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/cloaks/utils/AnimatedCloakData.java

@@ -1,36 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics.cloaks.utils;
-
-import net.minecraft.util.Identifier;
-
-/**
- * Represents a single frame of an animated cloak.
- */
-public class AnimatedCloakData {
-    private final Identifier textureId;
-    private final int delayMs;
-
-    /**
-     * Creates a new animated cloak frame.
-     *
-     * @param textureId The texture identifier for this frame
-     * @param delayMs   The delay in milliseconds before the next frame
-     */
-    public AnimatedCloakData(Identifier textureId, int delayMs) {
-        this.textureId = textureId;
-        this.delayMs = delayMs;
-    }
-
-    /**
-     * @return The texture identifier for this frame
-     */
-    public Identifier getTextureId() {
-        return textureId;
-    }
-
-    /**
-     * @return The delay in milliseconds before the next frame
-     */
-    public int getDelayMs() {
-        return delayMs;
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/cloaks/utils/IdentifierUtils.java

@@ -1,28 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics.cloaks.utils;
-
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.texture.NativeImage;
-import net.minecraft.client.texture.NativeImageBackedTexture;
-import net.minecraft.util.Identifier;
-import org.lwjgl.BufferUtils;
-
-import javax.imageio.ImageIO;
-import java.awt.image.BufferedImage;
-import java.io.ByteArrayOutputStream;
-import java.nio.ByteBuffer;
-
-public class IdentifierUtils {
-    public static void registerBufferedImageTexture(Identifier i, BufferedImage bi) {
-        try {
-            ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            ImageIO.write(bi, "png", baos);
-            byte[] bytes = baos.toByteArray();
-            ByteBuffer bb = BufferUtils.createByteBuffer(bytes.length).put(bytes);
-            bb.flip();
-            NativeImageBackedTexture nibt = new NativeImageBackedTexture(NativeImage.read(bb));
-            MinecraftClient.getInstance().getTextureManager().registerTexture(i, nibt);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/cosmetics/cloaks/utils/RandomUtils.java

@@ -1,48 +0,0 @@
-package org.saturnclient.saturnclient.cosmetics.cloaks.utils;
-
-import java.util.Random;
-
-/**
- * Utility class for generating random strings and numbers.
- */
-public final class RandomUtils {
-    private static final String ALPHANUMERIC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
-    private static final String ALPHANUMERIC_LOWERCASE = "0123456789abcdefghijklmnopqrstuvwxyz";
-    private static final Random RANDOM = new Random();
-
-    private RandomUtils() {
-        // Prevent instantiation
-    }
-
-    /**
-     * Generates a random string of specified length using given characters.
-     */
-    private static String random(final int length, final char[] chars) {
-        StringBuilder sb = new StringBuilder(length);
-        for (int i = 0; i < length; i++) {
-            sb.append(chars[RANDOM.nextInt(chars.length)]);
-        }
-        return sb.toString();
-    }
-
-    /**
-     * Generates a random string of specified length using alphanumeric characters.
-     */
-    public static String randomString(final int length) {
-        return random(length, ALPHANUMERIC.toCharArray());
-    }
-
-    /**
-     * Generates a random lowercase string of specified length.
-     */
-    public static String randomStringLowercase(final int length) {
-        return random(length, ALPHANUMERIC_LOWERCASE.toCharArray());
-    }
-
-    /**
-     * Generates a random integer between min and max (inclusive).
-     */
-    public static int randBetween(int min, int max) {
-        return RANDOM.nextInt(max - min + 1) + min;
-    }
-}

src/main/java/org/saturnclient/saturnclient/event/KeyInputHandler.java

@@ -1,71 +1,89 @@
 package org.saturnclient.saturnclient.event;
 
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
+//? if >=26.1 {
+/*import net.fabricmc.fabric.api.client.keymapping.v1.KeyMappingHelper;
+*///?} else
 import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
-import net.minecraft.client.option.KeyBinding;
-import net.minecraft.client.option.Perspective;
-import net.minecraft.client.util.InputUtil;
-import org.saturnclient.saturnclient.menus.SaturnMenu;
-import org.saturnclient.saturnmods.mods.FreeLook;
-import org.lwjgl.glfw.GLFW;
+import net.minecraft.client.KeyMapping;
+import com.mojang.blaze3d.platform.InputConstants;
+//? if >=1.21.9
+import net.minecraft.resources.Identifier;
+
+import org.saturnclient.config.Config;
+import org.saturnclient.saturnclient.SaturnClient;
+import org.saturnclient.common.provider.Providers;
+import org.saturnclient.client.ServiceClient;
+import org.saturnclient.emotes.fabric.Emotes;
+import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
+import org.saturnclient.ui.screens.EmoteWheel;
+import org.saturnclient.ui.screens.ShiftMenu;
+
 
 /**
  * Handles keyboard input events for the Saturn Client.
  * Manages keybindings and their associated actions.
  */
 public class KeyInputHandler {
-    private static final String KEY_CATEGORY = "key.category.saturnclient";
+    //? if >=1.21.9 {
+    private static final Identifier KEY_CATEGORY = Identifier.fromNamespaceAndPath("saturnclient", "key.category.saturnclient");
+    //?} else
+    //private static final String KEY_CATEGORY = "key.category.saturnclient";
     private static final String MAIN_MENU_KEY_ID = "key.saturnclient.main_menu";
-    private static final int DEFAULT_MENU_KEY = GLFW.GLFW_KEY_RIGHT_SHIFT;
-    private static KeyBinding mainMenuKeyBinding;
+    private static final int DEFAULT_MENU_KEY = InputConstants.KEY_RSHIFT;
+    private static KeyMapping mainMenuKeyBinding;
 
-    private static final String FREELOOK_KEY_ID = "key.saturnclient.freelook";
-    private static final int FREELOOK_KEY = GLFW.GLFW_KEY_M;
-    private static KeyBinding freelookKeyBinding;
-
-    /**
-     * Registers all keybindings and their associated event handlers.
-     * Should be called during mod initialization.
-     */
     public static void register() {
-        // Register the main menu key binding
-        mainMenuKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
+        //? if >=26.1 {
+        /*mainMenuKeyBinding = KeyMappingHelper.registerKeyMapping(
+                new KeyMapping(
                         MAIN_MENU_KEY_ID,
-                InputUtil.Type.KEYSYM,
+                        DEFAULT_MENU_KEY,
+                        KeyMapping.Category.register(KEY_CATEGORY)));
+        *///?} else if >=1.21.9 {
+        mainMenuKeyBinding = KeyBindingHelper.registerKeyBinding(
+                new KeyMapping(
+                        MAIN_MENU_KEY_ID,
+                        DEFAULT_MENU_KEY,
+                        KeyMapping.Category.register(KEY_CATEGORY)));
+        //?} else {
+        /*mainMenuKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyMapping(
+                MAIN_MENU_KEY_ID,
+                InputConstants.Type.KEYSYM,
                 DEFAULT_MENU_KEY,
                 KEY_CATEGORY));
-
-        freelookKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
-                FREELOOK_KEY_ID,
-                InputUtil.Type.KEYSYM,
-                FREELOOK_KEY,
-                KEY_CATEGORY));
+        *///?}
 
         // Register the event handler for the main menu key
         ClientTickEvents.END_CLIENT_TICK.register(client -> {
-            if (mainMenuKeyBinding.wasPressed()) {
-                client.setScreen(new SaturnMenu());
-            } else if (freelookKeyBinding.wasPressed() && FreeLook.enabled.value && FreeLook.toggle.value) {
-                FreeLook.isFreeLooking = !FreeLook.isFreeLooking;
-                if (FreeLook.isFreeLooking) {
-                    FreeLook.lastPerspective = client.options.getPerspective();
-                    client.options.setPerspective(Perspective.THIRD_PERSON_BACK);
-                } else if (FreeLook.lastPerspective != null) {
-                    client.options.setPerspective(FreeLook.lastPerspective);
-                    FreeLook.lastPerspective = null;
+            if (mainMenuKeyBinding.consumeClick()) {
+                Providers.saturn.getClient().setScreen(new ShiftMenu());
             }
-            } else if (FreeLook.enabled.value && !FreeLook.toggle.value) {
-                if (freelookKeyBinding.isPressed()) {
-                    if (!FreeLook.isFreeLooking) {
-                        FreeLook.lastPerspective = client.options.getPerspective();
-                        client.options.setPerspective(Perspective.THIRD_PERSON_BACK);
-                        FreeLook.isFreeLooking = true;
+
+            // The emote wheel key opens the wheel, and closes it again while it's open. Closing it
+            // from the screen's own key handling would reopen it on the next tick, since the key is
+            // still down and no screen is open by then.
+            if (Config.openEmoteWheel.wasKeyPressed()
+                    //? if >=26.3 {
+                    /*&& !InputConstants.isKeyDown(InputConstants.KEY_F3)) {
+                    *///?} else if >=1.21.9 {
+                    && !InputConstants.isKeyDown(client.getWindow(), InputConstants.KEY_F3)) {
+                    //?} else
+                    //&& !InputConstants.isKeyDown(client.getWindow().getWindow(), InputConstants.KEY_F3)) {
+                if (Screens.current() == null) {
+                    Providers.saturn.getClient().setScreen(new EmoteWheel());
+                } else if (Screens.current() instanceof SaturnScreenFabric saturnScreen
+                        && saturnScreen.screen instanceof EmoteWheel) {
+                    saturnScreen.onClose();
                 }
-                } else if (FreeLook.isFreeLooking && FreeLook.lastPerspective != null) {
-                    client.options.setPerspective(FreeLook.lastPerspective);
-                    FreeLook.isFreeLooking = false;
-                    FreeLook.lastPerspective = null;
             }
+
+            // Sneaking cancels your own emote, for everyone.
+            if (SaturnClient.client.player != null && SaturnClient.client.player.isShiftKeyDown()
+                    && Emotes.playing(SaturnClient.client.player.getUUID()).isPresent()) {
+                Emotes.stop(SaturnClient.client.player.getUUID());
+                ServiceClient.emote("");
             }
         });
     }

src/main/java/org/saturnclient/saturnclient/menus/CloaksMenu.java

@@ -1,158 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import net.minecraft.text.Text;
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.saturnclient.auth.Auth;
-import org.saturnclient.saturnclient.config.Property;
-import org.saturnclient.saturnclient.cosmetics.cloaks.Cloaks;
-import org.saturnclient.ui.SaturnUi;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.components.SkinPreview;
-import org.saturnclient.ui.widgets.SaturnClickableImage;
-import org.saturnclient.ui.widgets.SaturnClickableSprite;
-import org.saturnclient.ui.widgets.SaturnImage;
-import org.saturnclient.ui.widgets.SaturnInputBox;
-import org.saturnclient.ui.widgets.SaturnScroll;
-import org.saturnclient.ui.widgets.SaturnSprite;
-
-public class CloaksMenu extends SaturnUi {
-
-    private SaturnScroll scroll;
-    private Property<String> search = new Property<>("");
-
-    public CloaksMenu() {
-        super(Text.of("Cloaks Menu"));
-    }
-
-    @Override
-    protected void init() {
-        int rectWidth = 330;
-        int rectHeight = 228;
-        int rectX = (width - rectWidth) / 2;
-        int rectY = (height - rectHeight + 15) / 2;
-
-        draw(
-                new SaturnSprite(Textures.SETTINGS_BG)
-                        .setX(rectX)
-                        .setY(rectY)
-                        .setWidth(rectWidth)
-                        .setHeight(rectHeight)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int tabsX = (width - 43) / 2;
-        int tabsY = rectY - 17;
-
-        draw(
-                new SaturnSprite(Textures.RECT)
-                        .setX(tabsX)
-                        .setY(tabsY)
-                        .setWidth(43)
-                        .setHeight(15)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnInputBox(search, rectX + rectWidth - 72, tabsY, 70).onUpdate(() -> {
-                    scroll.clear();
-                    drawItems(rectX, rectY, rectWidth, rectHeight);
-                })
-                        .setHeight(15)
-                        .setWidth(72)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int tabSize = 9;
-        tabsX = (width - tabSize) / 2;
-        draw(
-                new SaturnClickableImage(Textures.HAT, () -> {
-                    client.setScreen(new HatsMenu());
-                })
-                        .setX(tabsX)
-                        .setY(tabsY + 4)
-                        .setWidth(tabSize)
-                        .setHeight(7)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.CLOAK, () -> {
-                })
-                        .setSelected(true)
-                        .setX(tabsX - 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.SEARCH, () -> {
-                    System.out.println("Pressed");
-                })
-                        .setX(tabsX + 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        scroll = new SaturnScroll();
-
-        drawItems(rectX, rectY, rectWidth, rectHeight);
-
-        draw(scroll
-                .setX(rectX + 17)
-                .setY(rectY + 10)
-                .setWidth(rectWidth - 17)
-                .setHeight(rectHeight - 10)
-                .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(new SkinPreview()
-                .setScale(3.0f)
-                .setX((rectX + rectWidth) - 180)
-                .setY(rectY + 8)
-                .setAnimations(SaturnClientConfig.getAnimations()));
-
-        super.init();
-    }
-
-    private void drawItems(int rectX, int rectY, int rectWidth, int rectHeight) {
-        int cloakWidth = 28;
-        int cloakHeight = 61;
-
-        int modX = 0;
-        int modY = 0;
-        int col = 0;
-
-        String[] searchTokens = search.value.toLowerCase().split("\\ ");
-
-        outer: for (String cloak : Cloaks.availableCloaks) {
-            for (String searchToken : searchTokens) {
-                if (!cloak.contains(searchToken)) {
-                    continue outer;
-                }
-            }
-
-            scroll.draw(
-                    new SaturnClickableSprite(Textures.BUTTON_BORDER, () -> {
-                        Cloaks.setCloak(Auth.uuid, cloak);
-                    })
-                            .setX(modX)
-                            .setY(modY)
-                            .setWidth(cloakWidth + 6)
-                            .setHeight(cloakHeight + 6));
-
-            scroll.draw(
-                    new SaturnImage(Textures.getCloakPreview(cloak))
-                            .setX(modX + 3)
-                            .setY(modY + 3)
-                            .setWidth(cloakWidth)
-                            .setHeight(cloakHeight));
-
-            col++;
-
-            if (col < 4) {
-                modX += cloakWidth + 21;
-            } else {
-                modX = 0;
-                modY += cloakHeight + 20;
-                col = 0;
-            }
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/menus/ConfigEditor.java

@@ -1,234 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import java.util.Map;
-import net.minecraft.text.Text;
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.saturnclient.config.ConfigManager;
-import org.saturnclient.saturnclient.config.Property;
-import org.saturnclient.ui.SaturnUi;
-import org.saturnclient.ui.SaturnWidget;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.components.SaturnFloat;
-import org.saturnclient.ui.components.SaturnHex;
-import org.saturnclient.ui.components.SaturnInteger;
-import org.saturnclient.ui.components.SaturnString;
-import org.saturnclient.ui.components.SaturnToggle;
-import org.saturnclient.ui.widgets.SaturnImageButton;
-import org.saturnclient.ui.widgets.SaturnScroll;
-import org.saturnclient.ui.widgets.SaturnSprite;
-import org.saturnclient.ui.widgets.SaturnText;
-
-public class ConfigEditor extends SaturnUi {
-
-    private ConfigManager config;
-
-    public ConfigEditor(ConfigManager config) {
-        super(Text.of("Config editor"));
-        this.config = config;
-    }
-
-    @Override
-    protected void init() {
-        int rectWidth = 330;
-        int rectHeight = 228;
-        int rectX = (width - rectWidth) / 2;
-        int rectY = (height - rectHeight + 15) / 2;
-
-        draw(
-                new SaturnSprite(Textures.SETTINGS_BG)
-                        .setX(rectX)
-                        .setY(rectY)
-                        .setWidth(rectWidth)
-                        .setHeight(rectHeight)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnImageButton(Textures.CLOSE, 9, 9, () -> {
-                    this.close();
-                })
-                        .setX(rectX)
-                        .setY(rectY - 15)
-                        .setWidth(13)
-                        .setHeight(13)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        SaturnScroll configScroll = new SaturnScroll();
-
-        int row = 0;
-        int col = 0;
-
-        drawProperties(configScroll, config.getProperties(), rectWidth, row, col);
-
-        draw(
-                configScroll
-                        .setX(rectX + 17)
-                        .setY(rectY + 10)
-                        .setWidth(rectWidth - 17)
-                        .setHeight(rectHeight - 10)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        super.init();
-    }
-
-    @SuppressWarnings("unchecked")
-    private int drawProperties(SaturnScroll configScroll, Map<String, Property<?>> properties, int rectWidth,
-            int row, int col) {
-        int totalRows = row;
-        for (Map.Entry<String, Property<?>> propEntry : properties.entrySet()) {
-            Property<?> prop = propEntry.getValue();
-            String propName = propEntry.getKey();
-
-            boolean full = isFull(prop);
-
-            if (full && col > 0) {
-                col = 0;
-                totalRows++;
-            }
-
-            int modX = ((rectWidth / 2) - 17) * col;
-            int modY = 14 * totalRows;
-
-            switch (prop.getType()) {
-                case BOOLEAN:
-                    configScroll.draw(
-                            new SaturnToggle((Property<Boolean>) prop)
-                                    .setX(modX)
-                                    .setY(modY));
-                    configScroll.draw(
-                            new SaturnText(
-                                    propName.substring(0, 1).toUpperCase() +
-                                            propName.substring(1))
-                                    .setX(modX + 18)
-                                    .setY(modY)
-                                    .setScale(0.8f));
-                    break;
-                case INTEGER:
-                    configScroll.draw(
-                            new SaturnText(
-                                    propName.substring(0, 1).toUpperCase() +
-                                            propName.substring(1))
-                                    .setX(modX)
-                                    .setY(modY)
-                                    .setScale(0.8f));
-
-                    configScroll.draw(
-                            new SaturnInteger(
-                                    (Property<Integer>) prop,
-                                    (rectWidth / 2) - 17,
-                                    modY,
-                                    70));
-
-                    configScroll.draw(resetButton(prop, modX, modY));
-                    break;
-                case FLOAT:
-                    configScroll.draw(
-                            new SaturnText(
-                                    propName.substring(0, 1).toUpperCase() +
-                                            propName.substring(1))
-                                    .setX(modX)
-                                    .setY(modY)
-                                    .setScale(0.8f));
-
-                    configScroll.draw(
-                            new SaturnFloat(
-                                    (Property<Float>) prop,
-                                    (rectWidth / 2) - 17,
-                                    modY,
-                                    70));
-
-                    configScroll.draw(resetButton(prop, modX, modY));
-                    break;
-                case STRING:
-                    configScroll.draw(
-                            new SaturnText(
-                                    propName.substring(0, 1).toUpperCase() +
-                                            propName.substring(1))
-                                    .setX(modX)
-                                    .setY(modY)
-                                    .setScale(0.8f));
-
-                    configScroll.draw(
-                            new SaturnString(
-                                    (Property<String>) prop,
-                                    (rectWidth / 2) - 17,
-                                    modY,
-                                    70));
-
-                    configScroll.draw(resetButton(prop, modX, modY));
-                    break;
-                case HEX:
-                    configScroll.draw(
-                            new SaturnText(
-                                    propName.substring(0, 1).toUpperCase() +
-                                            propName.substring(1))
-                                    .setX(modX)
-                                    .setY(modY)
-                                    .setScale(0.8f));
-
-                    configScroll.draw(
-                            new SaturnHex(
-                                    (Property<Integer>) prop,
-                                    (rectWidth / 2) - 17,
-                                    modY,
-                                    70));
-
-                    configScroll.draw(resetButton(prop, modX, modY));
-                    break;
-                case NAMESPACE:
-                    configScroll.draw(
-                            new SaturnText(
-                                    propName.substring(0, 1).toUpperCase() +
-                                            propName.substring(1))
-                                    .setX(modX)
-                                    .setY(modY)
-                                    .setScale(0.8f));
-
-                    // Recursively draw nested properties and update total rows
-                    Map<String, Property<?>> nestedProperties = (Map<String, Property<?>>) prop.value;
-                    totalRows = drawProperties(configScroll, nestedProperties, rectWidth,
-                            totalRows + 1, 0);
-            }
-
-            if (full) {
-                totalRows++;
-            } else {
-                col++;
-                if (col > 1) {
-                    col = 0;
-                    totalRows++;
-                }
-            }
-        }
-        return totalRows;
-    }
-
-    public static boolean isFull(Property<?> prop) {
-        switch (prop.getType()) {
-            case BOOLEAN:
-                return false;
-            default:
-                return true;
-        }
-    }
-
-    @Override
-    public void close() {
-        ConfigManager.save();
-        super.close();
-    }
-
-    public SaturnWidget resetButton(Property<?> prop, int modX, int modY) {
-        int size = textRenderer.fontHeight - 1;
-        return new SaturnImageButton(
-                Textures.RESET,
-                size,
-                size,
-                () -> {
-                    prop.reset();
-                })
-                .setX(modX + 209)
-                .setY(modY)
-                .setWidth(size + 3)
-                .setHeight(size + 3);
-    }
-}

src/main/java/org/saturnclient/saturnclient/menus/HatsMenu.java

@@ -1,133 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import net.minecraft.text.Text;
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.saturnclient.auth.Auth;
-import org.saturnclient.saturnclient.cosmetics.Hats;
-import org.saturnclient.ui.SaturnUi;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.components.SkinPreview;
-import org.saturnclient.ui.widgets.SaturnClickableImage;
-import org.saturnclient.ui.widgets.SaturnClickableSprite;
-import org.saturnclient.ui.widgets.SaturnImage;
-import org.saturnclient.ui.widgets.SaturnScroll;
-import org.saturnclient.ui.widgets.SaturnSprite;
-
-public class HatsMenu extends SaturnUi {
-
-    public HatsMenu() {
-        super(Text.of("Hats Menu"));
-    }
-
-    @Override
-    protected void init() {
-        int rectWidth = 330;
-        int rectHeight = 228;
-        int rectX = (width - rectWidth) / 2;
-        int rectY = (height - rectHeight + 15) / 2;
-
-        draw(
-                new SaturnSprite(Textures.SETTINGS_BG)
-                        .setX(rectX)
-                        .setY(rectY)
-                        .setWidth(rectWidth)
-                        .setHeight(rectHeight)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int tabsX = (width - 43) / 2;
-        int tabsY = rectY - 17;
-
-        draw(
-                new SaturnSprite(Textures.RECT)
-                        .setX(tabsX)
-                        .setY(tabsY)
-                        .setWidth(43)
-                        .setHeight(15)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int tabSize = 9;
-        tabsX = (width - tabSize) / 2;
-        draw(
-                new SaturnClickableImage(Textures.HAT, () -> {
-                    client.setScreen(new HatsMenu());
-                })
-                        .setSelected(true)
-                        .setX(tabsX)
-                        .setY(tabsY + 4)
-                        .setWidth(tabSize)
-                        .setHeight(7)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.CLOAK, () -> {
-                    client.setScreen(new CloaksMenu());
-                })
-                        .setX(tabsX - 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.SEARCH, () -> {
-                    System.out.println("Pressed");
-                })
-                        .setX(tabsX + 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int hatSize = 28;
-
-        int modX = 0;
-        int modY = 0;
-        int col = 0;
-
-        SaturnScroll modsScroll = new SaturnScroll();
-
-        for (String hat : Hats.availableHats) {
-            modsScroll.draw(
-                    new SaturnClickableSprite(Textures.BUTTON_BORDER, () -> {
-                        Hats.setHat(Auth.uuid, hat);
-                    })
-                            .setX(modX)
-                            .setY(modY)
-                            .setWidth(hatSize + 6)
-                            .setHeight(hatSize + 6));
-
-            modsScroll.draw(
-                    new SaturnImage(Textures.getHatPreview(hat))
-                            .setX(modX + 3)
-                            .setY(modY + 3)
-                            .setWidth(hatSize)
-                            .setHeight(hatSize));
-
-            col++;
-
-            if (col < 4) {
-                modX += hatSize + 21;
-            } else {
-                modX = 0;
-                modY += hatSize + 20;
-                col = 0;
-            }
-        }
-
-        draw(
-                modsScroll
-                        .setX(rectX + 17)
-                        .setY(rectY + 10)
-                        .setWidth(rectWidth - 17)
-                        .setHeight(rectHeight - 10)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(new SkinPreview()
-                .setScale(3.0f)
-                .setX((rectX + rectWidth) - 180)
-                .setY(rectY + 8)
-                .setAnimations(SaturnClientConfig.getAnimations()));
-
-        super.init();
-    }
-}

src/main/java/org/saturnclient/saturnclient/menus/HudEditor.java

@@ -1,136 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import net.minecraft.client.gui.DrawContext;
-import net.minecraft.client.gui.screen.Screen;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.text.Text;
-
-import org.saturnclient.saturnclient.config.ConfigManager;
-import org.saturnclient.saturnmods.HudMod;
-import org.saturnclient.saturnmods.ModDimensions;
-import org.saturnclient.saturnmods.ModManager;
-import org.saturnclient.saturnmods.SaturnMod;
-import org.saturnclient.ui.SaturnUi;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class HudEditor extends Screen {
-    private final List<HudMod> hudMods = new ArrayList<>();
-    private HudMod draggingMod = null;
-    private boolean resizing = false;
-    private int offsetX, offsetY;
-    private static final int RESIZE_MARGIN = 3;
-
-    public HudEditor() {
-        super(Text.literal("HUD Editor"));
-        for (SaturnMod m : ModManager.MODS) {
-            if (m.isEnabled() && m instanceof HudMod) {
-                hudMods.add((HudMod) m);
-            }
-        }
-    }
-
-    @Override
-    public boolean mouseClicked(double mouseX, double mouseY, int button) {
-        if (button == 0) {
-            for (int m = hudMods.size() - 1; m >= 0; m--) {
-                HudMod mod = hudMods.get(m);
-                ModDimensions dim = mod.getDimensions();
-
-                // Check if clicking the corner for resizing
-                if (isCorner(mouseX, mouseY, dim)) {
-                    draggingMod = mod;
-                    resizing = true;
-                    offsetX = (int) (mouseX - (dim.x.value + dim.width * dim.scale.value));
-                    offsetY = (int) (mouseY - (dim.y.value + dim.height * dim.scale.value));
-                    return true;
-                }
-
-                // Check if clicking inside the mod
-                if (isInside(mouseX, mouseY, dim)) {
-                    draggingMod = mod;
-                    resizing = false;
-                    offsetX = (int) (mouseX - dim.x.value);
-                    offsetY = (int) (mouseY - dim.y.value);
-                    return true;
-                }
-            }
-        }
-        return super.mouseClicked(mouseX, mouseY, button);
-    }
-
-    @Override
-    public boolean mouseReleased(double mouseX, double mouseY, int button) {
-        if (button == 0) {
-            draggingMod = null;
-            resizing = false;
-        }
-        return super.mouseReleased(mouseX, mouseY, button);
-    }
-
-    @Override
-    public boolean mouseDragged(double mouseX, double mouseY, int button, double deltaX, double deltaY) {
-        if (draggingMod != null) {
-            ModDimensions dim = draggingMod.getDimensions();
-
-            if (resizing) {
-                // Scale based on cursor movement
-                float newScale = Math.max(0.5f, ((float) (mouseX - dim.x.value) / dim.width));
-                dim.scale.value = newScale;
-            } else {
-                // Move the mod
-                dim.x.value = (int) mouseX - offsetX;
-                dim.y.value = (int) mouseY - offsetY;
-            }
-        }
-        return super.mouseDragged(mouseX, mouseY, button, deltaX, deltaY);
-    }
-
-    @Override
-    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
-        if (client.world == null && client.getCurrentServerEntry() == null) {
-            SaturnUi.ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, 1.0F, delta);
-        }
-
-        for (HudMod mod : hudMods) {
-            ModDimensions dim = mod.getDimensions();
-            MatrixStack matrices = context.getMatrices();
-            matrices.push();
-
-            matrices.translate(dim.x.value, dim.y.value, 0);
-            matrices.scale(dim.scale.value, dim.scale.value, 1.0f);
-
-            // Render the mod
-            mod.renderDummy(context);
-
-            matrices.pop();
-
-            // Draw border around mod
-            int borderX = dim.x.value;
-            int borderY = dim.y.value;
-            int borderW = (int) (dim.width * dim.scale.value);
-            int borderH = (int) (dim.height * dim.scale.value);
-
-            context.drawBorder(borderX, borderY, borderW, borderH, 0xFFFFFFFF); // White border
-        }
-    }
-
-    private boolean isInside(double mouseX, double mouseY, ModDimensions dim) {
-        return mouseX >= dim.x.value && mouseX <= dim.x.value + (dim.width * dim.scale.value) &&
-                mouseY >= dim.y.value && mouseY <= dim.y.value + (dim.height * dim.scale.value);
-    }
-
-    private boolean isCorner(double mouseX, double mouseY, ModDimensions dim) {
-        float rightX = dim.x.value + dim.width * dim.scale.value;
-        float bottomY = dim.y.value + dim.height * dim.scale.value;
-
-        return Math.abs(mouseX - rightX) < RESIZE_MARGIN && Math.abs(mouseY - bottomY) < RESIZE_MARGIN;
-    }
-
-    @Override
-    public void close() {
-        ConfigManager.save();
-        super.close();
-    }
-}

src/main/java/org/saturnclient/saturnclient/menus/ModMenu.java

@@ -1,146 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import net.minecraft.text.Text;
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.saturnclient.config.ConfigManager;
-import org.saturnclient.saturnclient.config.Property;
-import org.saturnclient.saturnmods.ModManager;
-import org.saturnclient.saturnmods.SaturnMod;
-import org.saturnclient.ui.SaturnUi;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.components.SaturnModComp;
-import org.saturnclient.ui.widgets.SaturnClickableImage;
-import org.saturnclient.ui.widgets.SaturnInputBox;
-import org.saturnclient.ui.widgets.SaturnScroll;
-import org.saturnclient.ui.widgets.SaturnSprite;
-
-public class ModMenu extends SaturnUi {
-
-    private SaturnScroll scroll;
-    private Property<String> search = new Property<>("");
-
-    public ModMenu() {
-        super(Text.literal("Mods"));
-    }
-
-    @Override
-    protected void init() {
-        int rectWidth = 330;
-        int rectHeight = 228;
-        int rectX = (width - rectWidth) / 2;
-        int rectY = (height - rectHeight + 15) / 2;
-
-        draw(
-                new SaturnSprite(Textures.SETTINGS_BG)
-                        .setX(rectX)
-                        .setY(rectY)
-                        .setWidth(rectWidth)
-                        .setHeight(rectHeight)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int tabsX = (width - 43) / 2;
-        int tabsY = rectY - 17;
-
-        draw(
-                new SaturnSprite(Textures.RECT)
-                        .setX(tabsX)
-                        .setY(tabsY)
-                        .setWidth(43)
-                        .setHeight(15)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnInputBox(search, rectX + rectWidth - 72, tabsY, 70).onUpdate(() -> {
-                    scroll.clear();
-                    drawItems(rectX, rectY, rectWidth, rectHeight);
-                })
-                        .setHeight(15)
-                        .setWidth(72)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int tabSize = 9;
-        tabsX = (width - tabSize) / 2;
-        draw(
-                new SaturnClickableImage(Textures.SETTINGS, () -> {
-                    client.setScreen(new SaturnConfigEditor());
-                })
-                        .setX(tabsX)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.MODS_TAB, () -> {
-                })
-                        .setSelected(true)
-                        .setX(tabsX - 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.SEARCH, () -> {
-                    System.out.println("Pressed");
-                })
-                        .setX(tabsX + 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        scroll = new SaturnScroll();
-
-        drawItems(rectX, rectY, rectWidth, rectHeight);
-
-        draw(scroll
-                .setX(rectX + 17)
-                .setY(rectY + 10)
-                .setWidth(rectWidth - 17)
-                .setHeight(rectHeight - 20)
-                .setAnimations(SaturnClientConfig.getAnimations()));
-
-        super.init();
-    }
-
-    @Override
-    public void close() {
-        ConfigManager.save();
-        super.close();
-    }
-
-    private void drawItems(int rectX, int rectY, int rectWidth, int rectHeight) {
-        int modX = 0;
-        int modY = 0;
-        int col = 0;
-
-        String[] searchTokens = search.value.toLowerCase().split("\\ ");
-
-        outer: for (SaturnMod mod : ModManager.MODS) {
-            String modName = mod.getName().toLowerCase();
-            for (String searchToken : searchTokens) {
-                if (!modName.contains(searchToken)) {
-                    continue outer;
-                }
-            }
-
-            scroll.draw(
-                    new SaturnModComp(mod)
-                            .setX(modX)
-                            .setY(modY)
-                            .setWidth(86)
-                            .setHeight(20));
-
-            col++;
-
-            if (col < 3) {
-                modX += 86 + 18;
-            } else {
-                modX = 0;
-                modY += 20 + 20;
-                col = 0;
-            }
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/menus/SaturnConfigEditor.java

@@ -1,64 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.widgets.SaturnClickableImage;
-import org.saturnclient.ui.widgets.SaturnSprite;
-
-public class SaturnConfigEditor extends ConfigEditor {
-
-    public SaturnConfigEditor() {
-        super(SaturnClientConfig.config);
-    }
-
-    @Override
-    protected void init() {
-        int rectHeight = 228;
-        int rectY = (height - rectHeight + 15) / 2;
-
-        int tabsX = (width - 43) / 2;
-        int tabsY = rectY - 17;
-
-        draw(
-                new SaturnSprite(Textures.RECT)
-                        .setX(tabsX)
-                        .setY(tabsY)
-                        .setWidth(43)
-                        .setHeight(15)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        int tabSize = 9;
-        tabsX = (width - tabSize) / 2;
-        draw(
-                new SaturnClickableImage(Textures.SETTINGS, () -> {
-                })
-                        .setSelected(true)
-                        .setX(tabsX)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.MODS_TAB, () -> {
-                    client.setScreen(new ModMenu());
-                })
-                        .setX(tabsX - 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        draw(
-                new SaturnClickableImage(Textures.SEARCH, () -> {
-                    System.out.println("Pressed");
-                })
-                        .setX(tabsX + 12)
-                        .setY(tabsY + 3)
-                        .setWidth(tabSize)
-                        .setHeight(tabSize)
-                        .setAnimations(SaturnClientConfig.getAnimations()));
-
-        super.init();
-    }
-}

src/main/java/org/saturnclient/saturnclient/menus/SaturnMenu.java

@@ -1,77 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.text.Text;
-
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.ui.SaturnUi;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.animations.FadeIn;
-import org.saturnclient.ui.animations.Slide;
-import org.saturnclient.ui.widgets.SaturnButton;
-import org.saturnclient.ui.widgets.SaturnImage;
-import org.saturnclient.ui.widgets.SaturnImageButton;
-
-public class SaturnMenu extends SaturnUi {
-    public SaturnMenu() {
-        super(Text.literal("Saturn Client"));
-    }
-
-    @Override
-    protected void init() {
-        SaturnClientConfig.textRenderer = MinecraftClient.getInstance().textRenderer;
-
-        int buttonWidth = 96;
-        int buttonHeight = 25;
-
-        draw(
-                new SaturnButton("Mods", () -> {
-                    client.setScreen(new ModMenu());
-                })
-                        .setX((width - buttonWidth) / 2)
-                        .setY((height - buttonHeight) / 2)
-                        .setWidth(buttonWidth)
-                        .setHeight(buttonHeight)
-                        .setAnimations(new FadeIn(2)));
-
-        draw(
-                new SaturnImageButton(Textures.HUD_ICON, 14, 14, () -> {
-                    client.setScreen(new HudEditor());
-                })
-                        .setX((width - buttonWidth - (buttonHeight * 2) - 6) / 2)
-                        .setY((height - buttonHeight) / 2)
-                        .setWidth(buttonHeight)
-                        .setHeight(buttonHeight)
-                        .setAnimations(new FadeIn(2)));
-
-        draw(
-                new SaturnImageButton(Textures.COSMETICS, 14, 14, () -> {
-                    client.setScreen(new CloaksMenu());
-                })
-                        .setX((width / 2) + (buttonWidth / 2) + 3)
-                        .setY((height - buttonHeight) / 2)
-                        .setWidth(buttonHeight)
-                        .setHeight(buttonHeight)
-                        .setAnimations(new FadeIn(2)));
-
-        int logoSize = 49;
-
-        draw(
-                new SaturnImage(Textures.LOGO_TEXT)
-                        .setX((width - logoSize) / 2)
-                        .setY((height - 8) / 2 - 23)
-                        .setWidth(logoSize)
-                        .setHeight(8)
-                        .setAnimations(new FadeIn(2)));
-
-        draw(
-                new SaturnImage(SaturnClientConfig.getLogo())
-                        .setX((width - logoSize) / 2)
-                        .setY(height / 2 - logoSize - 24)
-                        .setWidth(logoSize)
-                        .setHeight(logoSize)
-                        .setAnimations(new Slide(2, 14)));
-
-        super.init();
-    }
-}

src/main/java/org/saturnclient/saturnclient/menus/SaturnTitleScreen.java

@@ -1,77 +0,0 @@
-package org.saturnclient.saturnclient.menus;
-
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.ui.SaturnUi;
-import org.saturnclient.ui.Textures;
-import org.saturnclient.ui.animations.FadeIn;
-import org.saturnclient.ui.animations.Slide;
-import org.saturnclient.ui.widgets.SaturnButton;
-import org.saturnclient.ui.widgets.SaturnImage;
-
-import net.minecraft.client.gui.screen.multiplayer.MultiplayerScreen;
-import net.minecraft.client.gui.screen.option.OptionsScreen;
-import net.minecraft.client.gui.screen.world.SelectWorldScreen;
-import net.minecraft.text.Text;
-
-public class SaturnTitleScreen extends SaturnUi {
-    public SaturnTitleScreen() {
-        super(Text.literal("Title Screen"));
-    }
-
-    @Override
-    protected void init() {
-        blur = false;
-
-        int logoSize = 49;
-        int bX = (width - 150) / 2;
-        int bY = height / 2 - logoSize - 27;
-
-        draw(
-                new SaturnImage(SaturnClientConfig.getLogo())
-                        .setX((width - logoSize) / 2)
-                        .setY(bY)
-                        .setWidth(logoSize)
-                        .setHeight(logoSize)
-                        .setAnimations(new Slide(3, 14)));
-
-        bY += 44;
-
-        draw(
-                new SaturnImage(Textures.LOGO_TEXT)
-                        .setX((width - logoSize) / 2)
-                        .setY(bY)
-                        .setWidth(logoSize)
-                        .setHeight(8)
-                        .setAnimations(new FadeIn(3)));
-
-        bY += 15;
-
-        draw(new SaturnButton("SINGLEPLAYER", () -> {
-            client.setScreen(new SelectWorldScreen(new SaturnTitleScreen()));
-        }).setBold(true).setWidth(210).setHeight(26).setX(bX).setY(bY).setScale(0.69f));
-
-        bY += 20;
-
-        draw(new SaturnButton("MULTIPLAYER", () -> {
-            client.setScreen(new MultiplayerScreen(new SaturnTitleScreen()));
-        }).setBold(true).setWidth(210).setHeight(26).setX(bX).setY(bY).setScale(0.69f));
-
-        bY += 20;
-
-        draw(new SaturnButton("OPTIONS", () -> {
-            client.setScreen(new OptionsScreen(new SaturnTitleScreen(), this.client.options));
-        }).setBold(true).setWidth(103).setHeight(26).setX(bX).setY(bY).setScale(0.69f));
-
-        draw(new SaturnButton("QUIT", () -> {
-            client.scheduleStop();
-        }).setBold(true).setWidth(103).setHeight(26).setX(bX + 74).setY(bY).setScale(0.69f));
-
-        bY += 20;
-
-        draw(new SaturnButton("SATURN OPTIONS", () -> {
-            client.setScreen(new SaturnMenu());
-        }).setBold(true).setWidth(210).setHeight(26).setX(bX).setY(bY).setScale(0.69f));
-
-        super.init();
-    }
-}

src/main/java/org/saturnclient/saturnclient/mixin/CameraMixin.java

@@ -1,47 +0,0 @@
-package org.saturnclient.saturnclient.mixin;
-
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.render.Camera;
-
-import org.saturnclient.saturnclient.mod_utils.CameraOverriddenEntity;
-import org.saturnclient.saturnmods.mods.FreeLook;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Unique;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.Shadow;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-
-import net.minecraft.client.network.ClientPlayerEntity;
-import net.minecraft.entity.Entity;
-import net.minecraft.world.BlockView;
-
-@Mixin(Camera.class)
-public abstract class CameraMixin {
-    @Unique
-    boolean firstTime = true;
-
-    @Shadow
-    protected abstract void setRotation(float yaw, float pitch);
-
-    @Inject(method = "update", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/render/Camera;setRotation(FF)V", ordinal = 1, shift = At.Shift.AFTER))
-    public void lockRotation(BlockView focusedBlock, Entity cameraEntity, boolean isThirdPerson, boolean isFrontFacing,
-            float tickDelta, CallbackInfo ci) {
-        if (FreeLook.isFreeLooking && cameraEntity instanceof ClientPlayerEntity) {
-            CameraOverriddenEntity cameraOverriddenEntity = (CameraOverriddenEntity) cameraEntity;
-
-            if (firstTime && MinecraftClient.getInstance().player != null) {
-                cameraOverriddenEntity.freelook$setCameraPitch(MinecraftClient.getInstance().player.getPitch());
-                cameraOverriddenEntity.freelook$setCameraYaw(MinecraftClient.getInstance().player.getYaw());
-                firstTime = false;
-            }
-            this.setRotation(cameraOverriddenEntity.freelook$getCameraYaw(),
-                    cameraOverriddenEntity.freelook$getCameraPitch());
-
-        }
-        if (!FreeLook.isFreeLooking && cameraEntity instanceof ClientPlayerEntity) {
-            firstTime = true;
-        }
-    }
-
-}

src/main/java/org/saturnclient/saturnclient/mixin/Crosshair.java

@@ -1,47 +0,0 @@
-/*
- * Code from: https://github.com/Selyss
- * Repo: https://github.com/Selyss/CrosshairIndicator/tree/main
-*/
-
-package org.saturnclient.saturnclient.mixin;
-
-import com.mojang.blaze3d.systems.RenderSystem;
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.render.RenderLayer;
-import net.minecraft.client.render.RenderTickCounter;
-import net.minecraft.util.Identifier;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Final;
-import org.spongepowered.asm.mixin.Shadow;
-import org.spongepowered.asm.mixin.Unique;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-import net.minecraft.client.gui.hud.InGameHud;
-import net.minecraft.client.gui.DrawContext;
-
-@Mixin(InGameHud.class)
-public class Crosshair {
-    @Shadow
-    @Final
-    private MinecraftClient client;
-    @Unique
-    Identifier textureLocation = Identifier.of("saturnclient", "textures/gui/hud/crosshair_range.png");
-
-    @Inject(method = "renderCrosshair", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/DrawContext;drawGuiTexture(Ljava/util/function/Function;Lnet/minecraft/util/Identifier;IIII)V", ordinal = 0))
-    private void drawCrosshair(DrawContext context, RenderTickCounter tickCounter, CallbackInfo ci) {
-        if (org.saturnclient.saturnmods.mods.Crosshair.enabled.value
-                && org.saturnclient.saturnmods.mods.Crosshair.range_indicator.value
-                && this.client.targetedEntity != null
-                && this.client.targetedEntity.isAlive()) {
-            RenderSystem.setShaderTexture(0, textureLocation);
-            int scaledWidth = 15;
-            int scaledHeight = 15;
-
-            context.drawTexture(RenderLayer::getCrosshair, textureLocation,
-                    (context.getScaledWindowWidth() - scaledWidth) / 2,
-                    (context.getScaledWindowHeight() - scaledHeight) / 2, 0.0F, 0.0F, scaledWidth, scaledHeight,
-                    scaledWidth, scaledHeight);
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/mixin/DrawContextAccessor.java

@@ -0,0 +1,20 @@
+package org.saturnclient.saturnclient.mixin;
+
+import net.minecraft.client.gui.GuiGraphics;
+//? if >=1.21.6 {
+import net.minecraft.client.gui.render.state.GuiRenderState;
+//?} else
+//import net.minecraft.client.renderer.MultiBufferSource;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+@Mixin(GuiGraphics.class)
+public interface DrawContextAccessor {
+    //? if >=1.21.6 {
+    @Accessor("guiRenderState")
+    GuiRenderState getState();
+    //?} else {
+    /*@Accessor("bufferSource")
+    MultiBufferSource.BufferSource getVertexConsumers();
+    *///?}
+}

src/main/java/org/saturnclient/saturnclient/mixin/GuiRendererMixin.java

@@ -0,0 +1,46 @@
+package org.saturnclient.saturnclient.mixin;
+
+//? if >=26.1 {
+/*import com.llamalad7.mixinextras.injector.wrapoperation.Operation;
+import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation;
+import net.minecraft.client.gui.render.GuiRenderer;
+import net.minecraft.client.renderer.CubeMap;
+import org.saturnclient.impl.ui.GlassRenderer;
+import org.saturnclient.impl.ui.SaturnScreenFabric;
+import org.saturnclient.impl.ui.Screens;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+*///?} else
+import net.minecraft.client.Minecraft;
+import org.spongepowered.asm.mixin.Mixin;
+
+/**
+ * From 26.1 GuiRenderer draws the menu panorama from its own cube map, which is vanilla's. While a
+ * Saturn screen is open, this draws Saturn's panorama instead. It also blurs the glass backdrops
+ * once the panorama is drawn. Before 26.1 SaturnScreenFabric draws
+ * the panorama itself, so this mixin is empty there, and it targets Minecraft because GuiRenderer
+ * doesn't exist before 1.21.6. It stays registered, keeping saturnclient.mixins.json the same for
+ * every version.
+ */
+//? if >=26.1 {
+/*@Mixin(GuiRenderer.class)
+public class GuiRendererMixin {
+    @WrapOperation(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/CubeMap;render(FF)V"))
+    private void saturn$drawSaturnPanorama(CubeMap cubeMap, float xRot, float yRot, Operation<Void> original) {
+        boolean saturnScreen = Screens.current() instanceof SaturnScreenFabric;
+        original.call(saturnScreen ? SaturnScreenFabric.PANORAMA_RENDERER : cubeMap, xRot, yRot);
+    }
+
+    // The glass backdrops are copied here, with the frame's world and panorama drawn and the GUI not
+    // yet: the GUI is built before the frame is drawn (see GlassRenderer).
+    @Inject(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/render/GuiRenderer;prepare()V"))
+    private void saturn$blurGlassBackdrops(CallbackInfo ci) {
+        GlassRenderer.blurPendingBackdrops();
+    }
+}
+*///?} else {
+@Mixin(Minecraft.class)
+public class GuiRendererMixin {
+}
+//?}

src/main/java/org/saturnclient/saturnclient/mixin/NameTagMixin.java

@@ -1,76 +0,0 @@
-package org.saturnclient.saturnclient.mixin;
-
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.font.TextRenderer;
-import net.minecraft.client.font.TextRenderer.TextLayerType;
-import net.minecraft.client.render.VertexConsumerProvider;
-import net.minecraft.client.render.entity.EntityRenderDispatcher;
-import net.minecraft.client.render.entity.EntityRenderer;
-import net.minecraft.client.render.entity.state.EntityRenderState;
-import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
-import net.minecraft.client.util.math.MatrixStack;
-import net.minecraft.text.Text;
-import net.minecraft.util.math.Vec3d;
-
-import org.saturnclient.saturnclient.SaturnClientConfig;
-import org.saturnclient.saturnclient.auth.Auth;
-import org.joml.Matrix4f;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-import org.spongepowered.asm.mixin.Shadow;
-
-@Mixin(value = EntityRenderer.class, priority = 1800)
-public abstract class NameTagMixin<S extends EntityRenderState> {
-    @Shadow
-    public EntityRenderDispatcher dispatcher;
-
-    /**
-     * @author HexLeo
-     * @reason Adds the Saturn Client icon to the player's name if they are online
-     *         with Saturn Client
-     */
-    @Inject(method = "renderLabelIfPresent(Lnet/minecraft/client/render/entity/state/EntityRenderState;Lnet/minecraft/text/Text;Lnet/minecraft/client/util/math/MatrixStack;Lnet/minecraft/client/render/VertexConsumerProvider;I)V", at = @At("HEAD"), cancellable = true)
-    private void onRenderLabelIfPresent(S state, Text text, MatrixStack matrices,
-            VertexConsumerProvider vertexConsumers, int light, CallbackInfo ci) {
-        if (isSaturn(state)) {
-            renderLabel(state, Text.literal(SaturnClientConfig.getSaturnIndicator()).append(text), matrices,
-                    vertexConsumers, light);
-            ci.cancel();
-        }
-    }
-
-    private boolean isSaturn(S state) {
-        if (state instanceof PlayerEntityRenderState) {
-            String name = ((PlayerEntityRenderState) state).name;
-            String uuid = Auth.playerNames.get(name);
-            return uuid != null && Auth.players.containsKey(uuid);
-        }
-        return false;
-    }
-
-    private void renderLabel(S state, Text text, MatrixStack matrices,
-            VertexConsumerProvider vertexConsumers, int light) {
-        Vec3d vec3d = state.nameLabelPos;
-        if (vec3d != null) {
-            boolean bl = !state.sneaking;
-            int i = "deadmau5".equals(text.getString()) ? -10 : 0;
-            matrices.push();
-            matrices.translate(vec3d.x, vec3d.y + 0.5, vec3d.z);
-            matrices.multiply(this.dispatcher.getRotation());
-            matrices.scale(0.025F, -0.025F, 0.025F);
-            Matrix4f matrix4f = matrices.peek().getPositionMatrix();
-            TextRenderer textRenderer = MinecraftClient.getInstance().textRenderer;
-            float f = (float) (-textRenderer.getWidth(text)) / 2.0F;
-            int j = (int) (MinecraftClient.getInstance().options.getTextBackgroundOpacity(0.25F) * 255.0F) << 24;
-            textRenderer.draw(text, f, (float) i, -2130706433, false, matrix4f, vertexConsumers,
-                    bl ? TextLayerType.SEE_THROUGH : TextLayerType.NORMAL, j, light);
-            if (bl) {
-                textRenderer.draw(text, f, (float) i, -1, false, matrix4f, vertexConsumers, TextLayerType.NORMAL, 0,
-                        light);
-            }
-            matrices.pop();
-        }
-    }
-}

src/main/java/org/saturnclient/saturnclient/mixin/PlayerEntityRendererMixin.java

@@ -1,30 +1,82 @@
 package org.saturnclient.saturnclient.mixin;
 
-import net.minecraft.client.render.entity.EntityRendererFactory;
-import net.minecraft.client.render.entity.LivingEntityRenderer;
-import net.minecraft.client.render.entity.PlayerEntityRenderer;
-import net.minecraft.client.render.entity.model.PlayerEntityModel;
-import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
-import net.minecraft.entity.player.PlayerEntity;
+//? if >=1.21.9 {
+import net.minecraft.client.entity.ClientAvatarEntity;
+import net.minecraft.world.entity.Avatar;
+//?} else
+//import net.minecraft.client.player.AbstractClientPlayer;
+import net.minecraft.client.renderer.entity.EntityRendererProvider;
+import net.minecraft.client.renderer.entity.LivingEntityRenderer;
+import net.minecraft.client.renderer.entity.player.AvatarRenderer;
+//? if >=1.21.11 {
+import net.minecraft.client.model.player.PlayerModel;
+//?} else
+//import net.minecraft.client.model.PlayerModel;
+import net.minecraft.client.renderer.entity.state.AvatarRenderState;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.network.chat.MutableComponent;
+import net.minecraft.network.chat.Component;
+import net.minecraft.ChatFormatting;
 
-import org.saturnclient.saturnclient.cosmetics.CloakFeatureRenderer;
-import org.saturnclient.saturnclient.cosmetics.HatFeatureRenderer;
+import org.saturnclient.client.player.Roles;
+import org.saturnclient.client.player.SaturnPlayer;
+import org.saturnclient.impl.cosmetics.CloakFeatureRenderer;
+import org.saturnclient.impl.cosmetics.HatFeatureRenderer;
+import org.saturnclient.saturnclient.SaturnRenderState;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
-@Mixin(PlayerEntityRenderer.class)
+@Mixin(AvatarRenderer.class)
 public abstract class PlayerEntityRendererMixin
-        extends LivingEntityRenderer<PlayerEntity, PlayerEntityRenderState, PlayerEntityModel> {
+        extends LivingEntityRenderer<Player, AvatarRenderState, PlayerModel> {
 
     protected PlayerEntityRendererMixin() {
         super(null, null, 0.0f);
     }
 
     @Inject(method = "<init>", at = @At("TAIL"))
-    private void addCustomFeatureRenderer(EntityRendererFactory.Context ctx, boolean slim, CallbackInfo ci) {
-        this.addFeature(new HatFeatureRenderer(this));
-        this.addFeature(new CloakFeatureRenderer(this, ctx.getEntityModels(), ctx.getEquipmentModelLoader()));
+    private void addCustomFeatureRenderer(EntityRendererProvider.Context ctx, boolean slim, CallbackInfo ci) {
+        this.addLayer(new HatFeatureRenderer(this));
+        this.addLayer(new CloakFeatureRenderer(this, ctx.getEquipmentAssets()));
+    }
+
+    // Adds the role icon to the player's name, and stores the SaturnPlayer in the render state for the
+    // cloak and hat (Fabric API only has render state data from 1.21.8).
+    //? if >=1.21.9 {
+    @Inject(method = "extractRenderState", at = @At("TAIL"))
+    public <A extends Avatar & ClientAvatarEntity> void updateRenderState(
+            A entity, AvatarRenderState state, float f, CallbackInfo ci) {
+        saturn$applyPlayer(entity, state);
+    }
+    //?} else {
+    /*@Inject(method = "extractRenderState", at = @At("TAIL"))
+    public void updateRenderState(
+            AbstractClientPlayer entity, AvatarRenderState state, float f, CallbackInfo ci) {
+        saturn$applyPlayer(entity, state);
+    }
+    *///?}
+
+    private void saturn$applyPlayer(Entity entity, AvatarRenderState state) {
+        if (entity == null) {
+            return;
+        }
+
+        SaturnPlayer player = SaturnPlayer.get(entity.getUUID());
+
+        //? if >=1.21.8
+        state.setData(SaturnRenderState.saturnDataKey, player);
+
+        if (player != null && state.nameTag != null) {
+            MutableComponent iconText = Component.literal(Roles.getSaturnIndicator())
+                    .withStyle(style -> style.withColor(Roles.getIconColor(player.uuid)));
+
+            state.nameTag = Component.empty()
+                    .append(iconText.copy())
+                    .append(Component.empty().withStyle(ChatFormatting.RESET))
+                    .append(state.nameTag.copy());
+        }
     }
 }

src/main/java/org/saturnclient/saturnclient/mixin/SaturnReload.java

@@ -1,33 +0,0 @@
-package org.saturnclient.saturnclient.mixin;
-
-import java.util.Map;
-
-import org.jetbrains.annotations.Nullable;
-import org.saturnclient.saturnclient.auth.Auth;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-
-import net.minecraft.client.gui.hud.ChatHud;
-import net.minecraft.client.gui.hud.MessageIndicator;
-import net.minecraft.network.message.MessageSignatureData;
-import net.minecraft.text.Text;
-
-@Mixin(ChatHud.class)
-public class SaturnReload {
-    @Inject(method = "addMessage(Lnet/minecraft/text/Text;Lnet/minecraft/network/message/MessageSignatureData;Lnet/minecraft/client/gui/hud/MessageIndicator;)V", at = @At("HEAD"), cancellable = true)
-    public void onAddMessage(Text message, @Nullable MessageSignatureData signatureData,
-            @Nullable MessageIndicator indicator, CallbackInfo ci) {
-        String msg = message.toString();
-        if (msg.contains("$SATURN_RELOAD")) {
-            for (Map.Entry<String, String> player : Auth.playerNames.entrySet()) {
-                String name = player.getKey();
-                if (msg.contains(name)) {
-                    Auth.player(name, player.getValue());
-                }
-                ci.cancel();
-            }
-        }
-    }
-}